toolchain: add 4.12.x choice for headers

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

toolchain/toolchain-common.in

@@ -245,10 +245,15 @@ config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
 	bool
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
 
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
+
 # This order guarantees that the highest version is set, as kconfig
 # stops affecting a value on the first matching default.
 config BR2_TOOLCHAIN_HEADERS_AT_LEAST
 	string
+	default "4.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
 	default "4.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
 	default "4.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
 	default "4.9"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9

toolchain/toolchain-external/toolchain-external-custom/Config.in.options

@@ -93,6 +93,10 @@ choice
 	    m = ( LINUX_VERSION_CODE >> 8  ) & 0xFF
 	    p = ( LINUX_VERSION_CODE >> 0  ) & 0xFF
 
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12
+	bool "4.12.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
+
 config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_11
 	bool "4.11.x"
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11