refactor(mt8195): use ptp3 common drivers

Some 8195 ptp3 drivers are the same in plat/mediatek/drivers/ptp3, so
add this patch to reuse them.

Change-Id: I2b1801a73b6a2979e20d49d314c57f663dc5bf04
diff --git a/plat/mediatek/mt8195/platform.mk b/plat/mediatek/mt8195/platform.mk
index 80dfa53..07d39cb 100644
--- a/plat/mediatek/mt8195/platform.mk
+++ b/plat/mediatek/mt8195/platform.mk
@@ -15,6 +15,7 @@
                  -I${MTK_PLAT}/drivers/gpio/                      \
                  -I${MTK_PLAT}/drivers/pmic/                      \
                  -I${MTK_PLAT}/drivers/pmic_wrap/                 \
+                 -I${MTK_PLAT}/drivers/ptp3/                      \
                  -I${MTK_PLAT}/drivers/rtc/                       \
                  -I${MTK_PLAT}/drivers/timer/                     \
                  -I${MTK_PLAT}/drivers/uart/                      \
@@ -59,6 +60,7 @@
                 ${MTK_PLAT}/drivers/gpio/mtgpio_common.c              \
                 ${MTK_PLAT}/drivers/pmic/pmic.c                       \
                 ${MTK_PLAT}/drivers/pmic_wrap/pmic_wrap_init_v2.c     \
+                ${MTK_PLAT}/drivers/ptp3/ptp3_common.c            \
                 ${MTK_PLAT}/drivers/rtc/rtc_common.c                  \
                 ${MTK_PLAT}/drivers/rtc/rtc_mt6359p.c                 \
                 ${MTK_PLAT}/drivers/timer/mt_timer.c                  \
@@ -79,7 +81,6 @@
                 ${MTK_PLAT_SOC}/drivers/mcdi/mt_mcdi.c                \
                 ${MTK_PLAT_SOC}/drivers/mcdi/mt_lp_irqremain.c        \
                 ${MTK_PLAT_SOC}/drivers/gpio/mtgpio.c                 \
-                ${MTK_PLAT_SOC}/drivers/ptp3/mtk_ptp3_main.c          \
                 ${MTK_PLAT_SOC}/drivers/spmc/mtspmc.c                 \
                 ${MTK_PLAT_SOC}/plat_pm.c                             \
                 ${MTK_PLAT_SOC}/plat_sip_calls.c                      \