package/optee-client: add dependency on headers >= 4.3

Since upstream commit 5da4da99e0bb3d694e93046207ae4ce3b5545043, in
3.13.0, OP-TEE client unconditionally uses the MMC_IOC_MULTI_CMD
ioctl(). But this ioctl() was only introduced in kernel 4.3, so
earlier kernels did not have this definition.

This was clearly known when upstream started using this ioctl. From
the upstream commit 5da4da99e0bb3d694e93046207ae4ce3b5545043 commit
log:

    As MMC_IOC_MULTI_CMD is available since linux 4.3, we should be safe to
    use it by default on read / write block operations.

So let's propagate this dependency into Buildroot.

Fixes:

  http://autobuild.buildroot.net/results/bd270a6793df499d5f52959e3de17f8a92d88305/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/optee-benchmark/Config.in

@@ -3,6 +3,7 @@ config BR2_PACKAGE_OPTEE_BENCHMARK
 	depends on BR2_USE_MMU # fork()
 	depends on BR2_TOOLCHAIN_HAS_THREADS # optee-client
 	depends on !BR2_STATIC_LIBS # optee-client
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3 # optee-client
 	select BR2_PACKAGE_OPTEE_CLIENT
 	select BR2_PACKAGE_LIBYAML
 	help
@@ -13,6 +14,7 @@ config BR2_PACKAGE_OPTEE_BENCHMARK
 
 	  http://github.com/linaro-swg/optee_benchmark
 
-comment "optee-benchmark needs a toolchain w/ threads, dynamic library"
+comment "optee-benchmark needs a toolchain w/ threads, dynamic library, headers >= 4.3"
 	depends on BR2_USE_MMU
-	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS
+	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS || \
+		!BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3

package/optee-client/Config.in

@@ -2,6 +2,7 @@ config BR2_PACKAGE_OPTEE_CLIENT
 	bool "optee-client"
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	depends on !BR2_STATIC_LIBS # dlfcn.h
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3 # MMC_IOC_MULTI_CMD
 	help
 	  Enable the OP-TEE client package that brings non-secure
 	  client application resources for OP-TEE support. OP-TEE
@@ -26,5 +27,6 @@ config BR2_PACKAGE_OPTEE_CLIENT_TEE_FS_PATH
 
 endif
 
-comment "optee-client needs a toolchain w/ threads, dynamic library"
-	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS
+comment "optee-client needs a toolchain w/ threads, dynamic library, headers >= 4.3"
+	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS || \
+		!BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3

package/optee-examples/Config.in

@@ -3,6 +3,7 @@ config BR2_PACKAGE_OPTEE_EXAMPLES
 	depends on BR2_TARGET_OPTEE_OS
 	depends on BR2_TOOLCHAIN_HAS_THREADS # optee-client
 	depends on !BR2_STATIC_LIBS # optee-client
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3 # optee-client
 	select BR2_PACKAGE_OPTEE_CLIENT
 	select BR2_TARGET_OPTEE_OS_SDK
 	help
@@ -19,6 +20,7 @@ config BR2_PACKAGE_OPTEE_EXAMPLES
 
 	  https://github.com/linaro-swg/optee_examples
 
-comment "optee-examples needs a toolchain w/ threads, dynamic library"
+comment "optee-examples needs a toolchain w/ threads, dynamic library, headers >= 4.3"
 	depends on BR2_TARGET_OPTEE_OS
-	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS
+	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS || \
+		!BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3

package/optee-test/Config.in

@@ -4,6 +4,7 @@ config BR2_PACKAGE_OPTEE_TEST
 	depends on BR2_TOOLCHAIN_HAS_THREADS # optee-client
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on !BR2_STATIC_LIBS # optee-client
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3 # optee-client
 	select BR2_PACKAGE_OPTEE_CLIENT
 	select BR2_TARGET_OPTEE_OS_SDK
 	help
@@ -24,7 +25,7 @@ config BR2_PACKAGE_OPTEE_TEST
 
 	  http://github.com/OP-TEE/optee_test
 
-comment "optee-test needs a toolchain w/ threads, C++, dynamic library"
+comment "optee-test needs a toolchain w/ threads, C++, dynamic library, headers >= 4.3"
 	depends on BR2_TARGET_OPTEE_OS
 	depends on !BR2_TOOLCHAIN_HAS_THREADS || !BR2_INSTALL_LIBSTDCPP || \
-		BR2_STATIC_LIBS
+		BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3