mpc83xx: Fix typo in include/mpc83xx.h

Fixed typo from CONIFG_MPC837X to CONFIG_MPC837X
Signed-off-by: NNobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>

include/mpc83xx.h

@@ -528,7 +528,7 @@
 #if defined(CONFIG_MPC834X)
 #define HRCWH_ROM_LOC_PCI2		0x00200000
 #endif
-#if defined(CONIFG_MPC837X)
+#if defined(CONFIG_MPC837X)
 #define HRCWH_ROM_LOC_ON_CHIP_ROM	0x00300000
 #endif
 #define HRCWH_ROM_LOC_LOCAL_8BIT	0x00500000