dts: add sdhci,auto-cmd12 field for p4080 device tree

Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Cc: Jerry Huang <Chang-Ming.Huang@freescale.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Documentation/powerpc/dts-bindings/fsl/esdhc.txt

@@ -14,6 +14,8 @@ Required properties:
     reports inverted write-protect state;
   - sdhci,1-bit-only : (optional) specifies that a controller can
     only handle 1-bit data transfers.
+  - sdhci,auto-cmd12: (optional) specifies that a controller can
+    only handle auto CMD12.
 
 Example:
 

arch/powerpc/boot/dts/p4080ds.dts

@@ -280,6 +280,7 @@ sdhc: sdhc@114000 {
 			reg = <0x114000 0x1000>;
 			interrupts = <48 2>;
 			interrupt-parent = <&mpic>;
+			sdhci,auto-cmd12;
 		};
 
 		i2c@118000 {