mxs: Reowork SPL to use 'mxs' prefix for methods

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
diff --git a/board/freescale/mx28evk/iomux.c b/board/freescale/mx28evk/iomux.c
index 40d8cf6..16a6d8a 100644
--- a/board/freescale/mx28evk/iomux.c
+++ b/board/freescale/mx28evk/iomux.c
@@ -180,5 +180,5 @@
 
 void board_init_ll(void)
 {
-	mx28_common_spl_init(iomux_setup, ARRAY_SIZE(iomux_setup));
+	mxs_common_spl_init(iomux_setup, ARRAY_SIZE(iomux_setup));
 }