mediatek: mt8173: refactor RTC and PMIC drivers

Refactor RTC and PMIC drivers.

Change-Id: I74fca536cd61e00c962f080f1ba3759287682ecf
diff --git a/plat/mediatek/mt8173/drivers/pmic/pmic_wrap_init.h b/plat/mediatek/mt8173/drivers/pmic/pmic_wrap_init.h
index 0f09771..0dffc23 100644
--- a/plat/mediatek/mt8173/drivers/pmic/pmic_wrap_init.h
+++ b/plat/mediatek/mt8173/drivers/pmic/pmic_wrap_init.h
@@ -7,11 +7,13 @@
 #ifndef PMIC_WRAP_INIT_H
 #define PMIC_WRAP_INIT_H
 
+#include <platform_def.h>
+
 /* external API */
 int32_t pwrap_read(uint32_t adr, uint32_t *rdata);
 int32_t pwrap_write(uint32_t adr, uint32_t wdata);
 
-static struct mt8173_pmic_wrap_regs *const mt8173_pwrap =
+static struct mt8173_pmic_wrap_regs *const mtk_pwrap =
 	(void *)PMIC_WRAP_BASE;
 
 /* timeout setting */