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/include/configs/am43xx_evm.h b/include/configs/am43xx_evm.h
index 4ff8528..bcdff2e 100644
--- a/include/configs/am43xx_evm.h
+++ b/include/configs/am43xx_evm.h
@@ -9,7 +9,7 @@
 #define __CONFIG_AM43XX_EVM_H
 
 #define CONFIG_MAX_RAM_BANK_SIZE	(1024 << 21)	/* 2GB */
-#define CONFIG_SYS_TIMERBASE		0x48040000	/* Use Timer2 */
+#define CFG_SYS_TIMERBASE		0x48040000	/* Use Timer2 */
 
 #include <asm/arch/omap.h>
 
@@ -25,7 +25,7 @@
 /* SPL defines. */
 
 /* Enabling L2 Cache */
-#define CONFIG_SYS_PL310_BASE	0x48242000
+#define CFG_SYS_PL310_BASE	0x48242000
 
 /*
  * When building U-Boot such that there is no previous loader