global: Migrate CONFIG_SYS_MPC8* symbols to the CFG_SYS namespace

Migrate all of COFIG_SYS_MPC* to the CFG_SYS namespace.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/powerpc/cpu/mpc85xx/p1021_serdes.c b/arch/powerpc/cpu/mpc85xx/p1021_serdes.c
index 6b8e447..47f13e3 100644
--- a/arch/powerpc/cpu/mpc85xx/p1021_serdes.c
+++ b/arch/powerpc/cpu/mpc85xx/p1021_serdes.c
@@ -50,8 +50,8 @@
 
 void fsl_serdes_init(void)
 {
-	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
-	serdes_85xx_t *serdes = (void *)CONFIG_SYS_MPC85xx_SERDES1_ADDR;
+	ccsr_gur_t *gur = (void *)(CFG_SYS_MPC85xx_GUTS_ADDR);
+	serdes_85xx_t *serdes = (void *)CFG_SYS_MPC85xx_SERDES1_ADDR;
 
 	u32 pordevsr = in_be32(&gur->pordevsr);
 	u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>