Get rid of use of compatibility API

make 'make ARCH=aarch64 CROSS_COMPILE=aarch64-linux-gnu- PLAT=mt8173
ENABLE_PLAT_COMPAT=0' work.

Change-Id: I13f35d8aef23dfa0e65883fa0be43f1513c9fef5
Signed-off-by: Koan-Sin Tan <koansin.tan@gmail.com>
diff --git a/plat/mediatek/mt8173/bl31_plat_setup.c b/plat/mediatek/mt8173/bl31_plat_setup.c
index ef18d07..fa6e00d 100644
--- a/plat/mediatek/mt8173/bl31_plat_setup.c
+++ b/plat/mediatek/mt8173/bl31_plat_setup.c
@@ -162,8 +162,10 @@
 	plat_mt_gic_init();
 	arm_gic_setup();
 
+#if ENABLE_PLAT_COMPAT
 	/* Topologies are best known to the platform. */
 	mt_setup_topology();
+#endif
 
 	/* Initialize spm at boot time */
 	spm_boot_init();