protobuf-c: Don't require protobuf on target.

protobuf-c only requires protobuf when building the protoc compiler,
hence protobuf can be dropped from the target dependencies.

Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/protobuf-c/Config.in

@@ -2,7 +2,6 @@ config BR2_PACKAGE_PROTOBUF_C
 	bool "protobuf-c"
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_TOOLCHAIN_HAS_THREADS # protobuf
-	select BR2_PACKAGE_PROTOBUF
 	help
 	  Code generator and runtime libraries to use Protocol Buffers
 	  from pure C (not C++).

package/protobuf-c/protobuf-c.mk

@@ -6,7 +6,7 @@
 
 PROTOBUF_C_VERSION = 0.15
 PROTOBUF_C_SITE = http://protobuf-c.googlecode.com/files
-PROTOBUF_C_DEPENDENCIES = protobuf host-protobuf-c
+PROTOBUF_C_DEPENDENCIES = host-protobuf-c
 HOST_PROTOBUF_C_DEPENDENCIES = host-protobuf
 PROTOBUF_C_MAKE = $(MAKE1)
 PROTOBUF_C_CONF_OPT = --disable-protoc