global: Move remaining CONFIG_SYS_* to CFG_SYS_*

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do
not easily transition to Kconfig. In many cases they likely should come
from the device tree instead. Move these out of CONFIG namespace and in
to CFG namespace.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/mach-rmobile/include/mach/r8a7794.h b/arch/arm/mach-rmobile/include/mach/r8a7794.h
index 2bd6e46..a2a949d 100644
--- a/arch/arm/mach-rmobile/include/mach/r8a7794.h
+++ b/arch/arm/mach-rmobile/include/mach/r8a7794.h
@@ -24,7 +24,7 @@
 #define MSTP11_BITS	0x000001C0
 
 /* SDHI */
-#define CONFIG_SYS_SH_SDHI_NR_CHANNEL 3
+#define CFG_SYS_SH_SDHI_NR_CHANNEL 3
 
 #define R8A7794_CUT_ES2		2
 #define IS_R8A7794_ES2()	\