refactor(plat/imx/imx): make imx io-storage logic for TBBR/FIP common

This commit makes imx image io-storage logic common for all
imx platform.

Signed-off-by: Ying-Chun Liu (PaulLiu) <paulliu@debian.org>
Change-Id: I15045ac8f9dfa8cb714e32f9e7475d5eae4e86e4
diff --git a/plat/imx/imx7/common/imx7.mk b/plat/imx/imx7/common/imx7.mk
index 3a95772..fdde9a9 100644
--- a/plat/imx/imx7/common/imx7.mk
+++ b/plat/imx/imx7/common/imx7.mk
@@ -16,6 +16,7 @@
 				-Iplat/imx/imx7/include			\
 				-Idrivers/imx/timer			\
 				-Idrivers/imx/usdhc			\
+				-Iinclude/common/tbbr
 
 # Translation tables library
 include lib/xlat_tables_v2/xlat_tables.mk
@@ -46,7 +47,7 @@
 				plat/imx/imx7/common/imx7_bl2_el3_common.c	\
 				plat/imx/imx7/common/imx7_helpers.S		\
 				plat/imx/imx7/common/imx7_image_load.c		\
-				plat/imx/imx7/common/imx7_io_storage.c		\
+				plat/imx/common/imx_io_storage.c		\
 				plat/imx/common/aarch32/imx_uart_console.S	\
 				${XLAT_TABLES_LIB_SRCS}