msm: 9625: Add device tree information for NAND

Add device tree information for NAND controller. Also, add
documentation defining bindings for NAND controller and MTD
flash partition layout for NAND devices.

Change-Id: I6eaf949a54a19aacd3249711033563efd7fd90c2
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
diff --git a/arch/arm/boot/dts/msm9625.dts b/arch/arm/boot/dts/msm9625.dts
index 6c007fb..6b44be9 100644
--- a/arch/arm/boot/dts/msm9625.dts
+++ b/arch/arm/boot/dts/msm9625.dts
@@ -55,4 +55,14 @@
 		reg = <0xf991f000 0x1000>;
 		interrupts = <0 109 0>;
 	};
+
+	qcom,nand@f9ac0000 {
+		compatible = "qcom,msm-nand";
+		reg = <0xf9ac0000 0x1000>,
+		      <0xf9ac4000 0x8000>;
+		reg-names = "nand_phys",
+			    "bam_phys";
+		interrupts = <0 247 0>;
+		interrupt-names = "bam_irq";
+	};
 };