fix(mediatek): use uppercase for definition

Use uppercase for definition.
s/eDP_SEC_BASE/EDP_SEC_BASE/.
s/eDP_SEC_SIZE/EDP_SEC_SIZE/.

TEST=build pass for mt8195
BUG=b:233720142

Change-Id: I390055500a6347b67fefde36a7f103438ba2d5ff
diff --git a/plat/mediatek/drivers/dp/mt_dp.c b/plat/mediatek/drivers/dp/mt_dp.c
index 2cd5932..1bf2b44 100644
--- a/plat/mediatek/drivers/dp/mt_dp.c
+++ b/plat/mediatek/drivers/dp/mt_dp.c
@@ -15,7 +15,7 @@
 static uint32_t dp_write_sec_reg(uint32_t is_edp, uint32_t offset,
 				uint32_t value, uint32_t mask)
 {
-	uint32_t reg = (is_edp != 0U) ? eDP_SEC_BASE : DP_SEC_BASE;
+	uint32_t reg = (is_edp != 0U) ? EDP_SEC_BASE : DP_SEC_BASE;
 
 	mmio_clrsetbits_32(reg + offset, mask, value);