mxs: prefix register acessor macros with 'mxs' prefix

As the register accessing mode is the same for all i.MXS SoCs we ought
to use 'mxs' prefix intead of 'mx28'.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
diff --git a/arch/arm/cpu/arm926ejs/mxs/mx28.c b/arch/arm/cpu/arm926ejs/mxs/mx28.c
index cf7a50f..65fcd75 100644
--- a/arch/arm/cpu/arm926ejs/mxs/mx28.c
+++ b/arch/arm/cpu/arm926ejs/mxs/mx28.c
@@ -81,7 +81,7 @@
 #endif
 }
 
-int mx28_wait_mask_set(struct mx28_register_32 *reg, uint32_t mask, int timeout)
+int mx28_wait_mask_set(struct mxs_register_32 *reg, uint32_t mask, int timeout)
 {
 	while (--timeout) {
 		if ((readl(&reg->reg) & mask) == mask)
@@ -92,7 +92,7 @@
 	return !timeout;
 }
 
-int mx28_wait_mask_clr(struct mx28_register_32 *reg, uint32_t mask, int timeout)
+int mx28_wait_mask_clr(struct mxs_register_32 *reg, uint32_t mask, int timeout)
 {
 	while (--timeout) {
 		if ((readl(&reg->reg) & mask) == 0)
@@ -103,7 +103,7 @@
 	return !timeout;
 }
 
-int mx28_reset_block(struct mx28_register_32 *reg)
+int mx28_reset_block(struct mxs_register_32 *reg)
 {
 	/* Clear SFTRST */
 	writel(MX28_BLOCK_SFTRST, &reg->reg_clr);