dts: arm: Refactor SoC dts.fixup into arch/arm/soc

Move common SoC dts.fixup defines into arch/arm/soc/<SOC>/dts.fixup so
we remove duplication in the boards and only have board specific
defines in boards/arm/<FOO>/dts.fixup.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>

arch/arm/soc/arm/beetle/dts.fixup

@@ -1,3 +1,5 @@
+/* SoC level DTS fixup file */
+
 #define CONFIG_NUM_IRQ_PRIO_BITS	ARM_V7M_NVIC_E000E100_ARM_NUM_IRQ_PRIORITY_BITS
 
 /* CMSDK APB Timers */
@@ -35,3 +37,5 @@
 #define CMSDK_AHB_GPIO2				ARM_CMSDK_GPIO_40012000_BASE_ADDRESS_0
 
 #define CMSDK_AHB_GPIO3				ARM_CMSDK_GPIO_40013000_BASE_ADDRESS_0
+
+/* End of SoC Level DTS fixup file */

arch/arm/soc/arm/mps2/dts.fixup

@@ -1,3 +1,5 @@
+/* SoC level DTS fixup file */
+
 #define CONFIG_NUM_IRQ_PRIO_BITS	ARM_V7M_NVIC_E000E100_ARM_NUM_IRQ_PRIORITY_BITS
 
 /* CMSDK APB Timers */
@@ -62,3 +64,5 @@
 
 #define CMSDK_AHB_GPIO3				ARM_CMSDK_GPIO_40013000_BASE_ADDRESS_0
 #define IRQ_PORT3_ALL				ARM_CMSDK_GPIO_40013000_IRQ_0
+
+/* End of SoC Level DTS fixup file */

arch/arm/soc/silabs_exx32/efm32wg/dts.fixup

@@ -4,9 +4,12 @@
  * generated data matches the driver definitions.
  */
 
+/* SoC level DTS fixup file */
 
 #define CONFIG_NUM_IRQ_PRIO_BITS	ARM_V7M_NVIC_E000E100_ARM_NUM_IRQ_PRIORITY_BITS
 #define CONFIG_UART_GECKO_0_NAME	SILABS_EFM32_USART_4000C000_LABEL
 
 #define CONFIG_UART_GECKO_0_BAUD_RATE	SILABS_EFM32_USART_4000C000_CURRENT_SPEED
 #define CONFIG_UART_GECKO_0_IRQ_PRI	SILABS_EFM32_USART_4000C000_IRQ_0_PRIORITY
+
+/* End of SoC Level DTS fixup file */

arch/arm/soc/ti_lm3s6965/dts.fixup

@@ -1 +1,5 @@
+/* SoC level DTS fixup file */
+
 #define CONFIG_NUM_IRQ_PRIO_BITS	ARM_V7M_NVIC_E000E100_ARM_NUM_IRQ_PRIORITY_BITS
+
+/* End of SoC Level DTS fixup file */