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/include/asm/arch-stv0991/stv0991_gpt.h b/arch/arm/include/asm/arch-stv0991/stv0991_gpt.h
index 5b12d90..eb1ddca 100644
--- a/arch/arm/include/asm/arch-stv0991/stv0991_gpt.h
+++ b/arch/arm/include/asm/arch-stv0991/stv0991_gpt.h
@@ -36,6 +36,6 @@
 #define GPT_FREE_RUNNING		0xFFFF
 
 /* Timer, HZ specific defines */
-#define CONFIG_SYS_HZ_CLOCK		((27 * 1000 * 1000) / GPT_PRESCALER_128)
+#define CFG_SYS_HZ_CLOCK		((27 * 1000 * 1000) / GPT_PRESCALER_128)
 
 #endif