arm: mvebu: Only set CONFIG_SKIP_LOWLEVEL_INIT for SPL

When running on the AXP I sometimes noticed a strange behavior. As some
characters are not echoed on the U-Boot prompt. Not disabling the
lowlevel_init code, especially calling cpu_init_cp15() in the main
U-Boot seems to solve this issue.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/include/configs/maxbcm.h b/include/configs/maxbcm.h
index 3530a26..3bed9c7 100644
--- a/include/configs/maxbcm.h
+++ b/include/configs/maxbcm.h
@@ -11,7 +11,9 @@
  * High Level Configuration Options (easy to change)
  */
 #define CONFIG_ARMADA_XP		/* SOC Family Name */
+#ifdef CONFIG_SPL_BUILD
 #define CONFIG_SKIP_LOWLEVEL_INIT	/* disable board lowlevel_init */
+#endif
 #define CONFIG_SYS_GENERIC_BOARD
 #define CONFIG_DISPLAY_BOARDINFO_LATE