ARM: dts: msm: Early mount of vendor partition for msm8998

Add support to early mount vendor partition so that venodr modules
can be loaded during early init.

Change-Id: I668a7c3b1716816d497b7f170b554dfe8960701c
Signed-off-by: Imran Khan <kimran@codeaurora.org>

Documentation/devicetree/bindings/arm/msm/android.txt

@@ -0,0 +1,54 @@
+Android firmware
+
+Node to specify early mount of vendor partition.
+
+Required properties
+
+-compatible: "android,firmware"
+
+Child nodes:
+------------
+
+fstab:
+------------------------------
+
+fstab entry to specify mount attributes of vendor partition.
+
+Required properties:
+
+-compatible: "android,fstab"
+
+Child nodes:
+------------
+
+vendor:
+-----------------
+
+vendor partition specification.
+
+Required properties:
+
+-compatible: "android, vendor"
+-dev: block device corresponding to vendor partition
+-type: file system type of vendor partition
+-mnt_flags: mount flags
+-fsmgr_flags: fsmgr flags
+
+Example:
+
+	firmware: firmware {
+		android {
+			compatible = "android,firmware";
+			fstab {
+				compatible = "android,fstab";
+				vendor {
+					compatible = "android,vendor";
+					dev = "/dev/block/platform/soc/1da4000.ufshc/by-name/vendor";
+					type = "ext4";
+					mnt_flags = "ro,barrier=1,discard";
+					fsmgr_flags = "wait,slotselect";
+					status = "ok";
+				};
+			};
+		};
+	};

arch/arm/boot/dts/qcom/msm8998.dtsi

@@ -282,6 +282,23 @@
 		compatible = "simple-bus";
 	};
 
+	firmware: firmware {
+		android {
+			compatible = "android,firmware";
+			fstab {
+				compatible = "android,fstab";
+				vendor {
+					compatible = "android,vendor";
+					dev = "/dev/block/platform/soc/1da4000.ufshc/by-name/vendor";
+					type = "ext4";
+					mnt_flags = "ro,barrier=1,discard";
+					fsmgr_flags = "wait,slotselect";
+					status = "ok";
+				};
+			};
+		};
+	};
+
 	reserved-memory {
 		#address-cells = <2>;
 		#size-cells = <2>;