refator(mediatek): move drivers folder in common to plat/mediatek

We plan to put some soc related drivers in common/drivers. To reduce
confision, we move them to plat/mediatek.

Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Change-Id: I6b344e660f40a23b15151aab073d3045b28f52aa
diff --git a/plat/mediatek/mt8173/platform.mk b/plat/mediatek/mt8173/platform.mk
index fa3605a..6bf1aa7 100644
--- a/plat/mediatek/mt8173/platform.mk
+++ b/plat/mediatek/mt8173/platform.mk
@@ -37,10 +37,10 @@
 				lib/cpus/aarch64/cortex_a53.S			\
 				lib/cpus/aarch64/cortex_a57.S			\
 				lib/cpus/aarch64/cortex_a72.S			\
-				${MTK_PLAT}/common/drivers/pmic_wrap/pmic_wrap_init.c	\
-				${MTK_PLAT}/common/drivers/rtc/rtc_common.c	\
 				${MTK_PLAT}/common/mtk_plat_common.c		\
 				${MTK_PLAT}/common/mtk_sip_svc.c		\
+				${MTK_PLAT}/drivers/pmic_wrap/pmic_wrap_init.c	\
+				${MTK_PLAT}/drivers/rtc/rtc_common.c		\
 				${MTK_PLAT_SOC}/aarch64/plat_helpers.S		\
 				${MTK_PLAT_SOC}/aarch64/platform_common.c	\
 				${MTK_PLAT_SOC}/bl31_plat_setup.c		\