hikey960: fix invoking driver init in image load driver

It's unnecessary to call platform driver initialization in image
load driver. We could make bl2_platform_setup() to executing
just before SCP_BL2 by setting flag IMAGE_ATTRIB_PLAT_SETUP.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
diff --git a/plat/hisilicon/hikey960/hikey960_bl2_setup.c b/plat/hisilicon/hikey960/hikey960_bl2_setup.c
index d443d8e..50bc7f0 100644
--- a/plat/hisilicon/hikey960/hikey960_bl2_setup.c
+++ b/plat/hisilicon/hikey960/hikey960_bl2_setup.c
@@ -157,7 +157,7 @@
 	} while (data & PERI_UFS_BIT);
 }
 
-void hikey960_init_ufs(void)
+static void hikey960_init_ufs(void)
 {
 	dw_ufs_params_t ufs_params;
 
@@ -747,4 +747,6 @@
 	hikey960_tzc_init();
 	hikey960_peri_init();
 	hikey960_pinmux_init();
+	hikey960_init_ufs();
+	hikey960_io_setup();
 }