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-at91/include/mach/at91sam9rl.h b/arch/arm/mach-at91/include/mach/at91sam9rl.h
index 8f9155c..b2c074e 100644
--- a/arch/arm/mach-at91/include/mach/at91sam9rl.h
+++ b/arch/arm/mach-at91/include/mach/at91sam9rl.h
@@ -112,7 +112,7 @@
 #define ATMEL_BASE_CS5		0x60000000	/* Compact Flash Slot 1 */
 
 /* Timer */
-#define CONFIG_SYS_TIMER_COUNTER	0xfffffd3c
+#define CFG_SYS_TIMER_COUNTER	0xfffffd3c
 
 /*
  * Other misc defines