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/m68k/cpu/mcf530x/cpu.c b/arch/m68k/cpu/mcf530x/cpu.c
index 0659bf6..53a25d8 100644
--- a/arch/m68k/cpu/mcf530x/cpu.c
+++ b/arch/m68k/cpu/mcf530x/cpu.c
@@ -33,7 +33,7 @@
 	char buf[32];
 
 	printf("CPU:   Freescale Coldfire MCF5307 at %s MHz\n",
-	       strmhz(buf, CONFIG_SYS_CPU_CLK));
+	       strmhz(buf, CFG_SYS_CPU_CLK));
 	return 0;
 }
 #endif /* CONFIG_DISPLAY_CPUINFO */