common: Drop CONFIG_HAS_POST

This only exists to control whether the post/ directory is build. It is
just as easy to check this in the Makefile. Remove CONFIG_HAS_POST and use
an ifdef in the Makefile instead.

Signed-off-by: Simon Glass <sjg@chromium.org>

Makefile

@@ -763,7 +763,9 @@ libs-y += cmd/
 libs-y += common/
 libs-y += env/
 libs-$(CONFIG_API) += api/
-libs-$(CONFIG_HAS_POST) += post/
+ifdef CONFIG_POST
+libs-y += post/
+endif
 libs-$(CONFIG_UNIT_TEST) += test/ test/dm/
 libs-$(CONFIG_UT_ENV) += test/env/
 libs-$(CONFIG_UT_OPTEE) += test/optee/

include/common.h

@@ -122,10 +122,6 @@ int get_serial_clock(void);
 
 /* Put only stuff here that the assembler can digest */
 
-#ifdef CONFIG_POST
-#define CONFIG_HAS_POST
-#endif
-
 #define ROUND(a,b)		(((a) + (b) - 1) & ~((b) - 1))
 
 /*