global: Migrate CONFIG_PL011_CLOCK to CFG

Perform a simple rename of CONFIG_PL011_CLOCK to CFG_PL011_CLOCK

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/highbank.h b/include/configs/highbank.h
index 76e6054..97bb439 100644
--- a/include/configs/highbank.h
+++ b/include/configs/highbank.h
@@ -8,7 +8,7 @@
 
 #define CFG_SYS_BOOTMAPSZ		(16 << 20)
 
-#define CONFIG_PL011_CLOCK		150000000
+#define CFG_PL011_CLOCK		150000000
 
 /*
  * Miscellaneous configurable options