ENGR00319692 dts: imx6qdl-sabresd: make emmc on usdhc4 fixed to mmc0

The mmc core will reserve the mmc index for the specific controller
by add mmc alias in device tree.
There's an eMMC chip on sabresd board on uSDHC slot 4.
We want it be fixed to mmc0 to be used for finding rootfs persistently.
So adding Alias  mmc0 to usdhc4 in device tree.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
(cherry picked from commit 4cd99820322abca9c9d2b82ee2513aa9d096c02b)

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/imx6qdl-sabresd.dtsi b/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
index 100b9c8364d4..1f5c1de6a2f7 100644
--- a/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
@@ -12,6 +12,7 @@
 
 / {
         aliases {
+                mmc0 = &usdhc4;
                 mxcfb0 = &mxcfb1;
                 mxcfb1 = &mxcfb2;
                 mxcfb2 = &mxcfb3;