83xx: Replace CONFIG_MPC83[0-9]X with MPC83[0-9]x

Use the standard lowercase "x" capitalization that other Freescale
architectures use for CPU defines to prevent confusion and errors

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/cpu/mpc83xx/cpu_init.c b/cpu/mpc83xx/cpu_init.c
index 8e9c875..d9b96b5 100644
--- a/cpu/mpc83xx/cpu_init.c
+++ b/cpu/mpc83xx/cpu_init.c
@@ -185,7 +185,7 @@
 
 	/* System General Purpose Register */
 #ifdef CONFIG_SYS_SICRH
-#if defined(CONFIG_MPC834X) || defined(CONFIG_MPC8313)
+#if defined(CONFIG_MPC834x) || defined(CONFIG_MPC8313)
 	/* regarding to MPC34x manual rev.1 bits 28..29 must be preserved */
 	im->sysconf.sicrh = (im->sysconf.sicrh & 0x0000000C) | CONFIG_SYS_SICRH;
 #else