fix(mt8186): fix EMI_MPU domain setting for DSP

Correct the domain setting for DSP. It should be 6.

BUG=b:249954378
TEST=audio is functional.

Change-Id: Ie79aa0dad3d2b1ef5de0f2acc51ded13b6f085ac
diff --git a/plat/mediatek/mt8186/drivers/emi_mpu/emi_mpu.c b/plat/mediatek/mt8186/drivers/emi_mpu/emi_mpu.c
index f2864a1..1133c86 100644
--- a/plat/mediatek/mt8186/drivers/emi_mpu/emi_mpu.c
+++ b/plat/mediatek/mt8186/drivers/emi_mpu/emi_mpu.c
@@ -116,7 +116,7 @@
 	SET_ACCESS_PERMISSION(region_info.apc, 1,
 			      FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN,
 			      FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN,
-			      FORBIDDEN, FORBIDDEN, FORBIDDEN, NO_PROTECTION,
+			      FORBIDDEN, NO_PROTECTION, FORBIDDEN, FORBIDDEN,
 			      FORBIDDEN, FORBIDDEN, FORBIDDEN, NO_PROTECTION);
 	emi_mpu_set_protection(&region_info);