arm: dts: omap: add reg-shift to serial device tree node

With the commit 'c7b9686d5d48 ("ns16550: unify serial_omap")' all
TI platforms are broken with DM/DT boot as ns16550 driver expects
reg-shift from DT which is not populated for TI platforms.
Earlier it worked as it was hard coded to 2 in serial-omap
driver. So adding the reg-shift to serial nodes for dra7, am4372
and am33xx dtsi files. Tested this patch on am437x-sk-evm,
am437x-gp-evm, am335x-boneblack, dra74x-evm and dra72x-evm.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Thomas Chou <thomas@wytron.com.tw>
diff --git a/arch/arm/dts/dra7.dtsi b/arch/arm/dts/dra7.dtsi
index 8f1e25b..feb3708 100644
--- a/arch/arm/dts/dra7.dtsi
+++ b/arch/arm/dts/dra7.dtsi
@@ -399,6 +399,7 @@
 		uart1: serial@4806a000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806a000 0x100>;
+			reg-shift = <2>;
 			interrupts-extended = <&crossbar_mpu GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart1";
 			clock-frequency = <48000000>;
@@ -410,6 +411,7 @@
 		uart2: serial@4806c000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806c000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart2";
 			clock-frequency = <48000000>;
@@ -421,6 +423,7 @@
 		uart3: serial@48020000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48020000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart3";
 			clock-frequency = <48000000>;
@@ -432,6 +435,7 @@
 		uart4: serial@4806e000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806e000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart4";
 			clock-frequency = <48000000>;
@@ -443,6 +447,7 @@
 		uart5: serial@48066000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48066000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart5";
 			clock-frequency = <48000000>;
@@ -454,6 +459,7 @@
 		uart6: serial@48068000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48068000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart6";
 			clock-frequency = <48000000>;
@@ -465,6 +471,7 @@
 		uart7: serial@48420000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48420000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 218 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart7";
 			clock-frequency = <48000000>;
@@ -474,6 +481,7 @@
 		uart8: serial@48422000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48422000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 219 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart8";
 			clock-frequency = <48000000>;
@@ -483,6 +491,7 @@
 		uart9: serial@48424000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48424000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 220 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart9";
 			clock-frequency = <48000000>;
@@ -492,6 +501,7 @@
 		uart10: serial@4ae2b000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4ae2b000 0x100>;
+			reg-shift = <2>;
 			interrupts = <GIC_SPI 221 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart10";
 			clock-frequency = <48000000>;