soc: arm: silabs_exx32: make soc_pinmap.h self contained

The soc_pinmap.h uses the DT API, so these headers needs to include
<devicetree.h>.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>

soc/arm/silabs_exx32/efm32gg11b/soc_pinmap.h

@@ -15,6 +15,7 @@
 #ifndef _SILABS_EFM32GG11B_SOC_PINMAP_H_
 #define _SILABS_EFM32GG11B_SOC_PINMAP_H_
 
+#include <devicetree.h>
 #include <soc.h>
 #include <em_gpio.h>
 

soc/arm/silabs_exx32/efm32jg12b/soc_pinmap.h

@@ -13,6 +13,7 @@
 #ifndef _SILABS_EFM32JG12B_SOC_PINMAP_H_
 #define _SILABS_EFM32JG12B_SOC_PINMAP_H_
 
+#include <devicetree.h>
 #include <soc.h>
 #include <em_gpio.h>
 

soc/arm/silabs_exx32/efm32pg12b/soc_pinmap.h

@@ -13,6 +13,7 @@
 #ifndef _SILABS_EFM32PG12B_SOC_PINMAP_H_
 #define _SILABS_EFM32PG12B_SOC_PINMAP_H_
 
+#include <devicetree.h>
 #include <soc.h>
 #include <em_gpio.h>
 

soc/arm/silabs_exx32/efm32pg1b/soc_pinmap.h

@@ -13,6 +13,7 @@
 #ifndef _SILABS_EFM32PG1B_SOC_PINMAP_H_
 #define _SILABS_EFM32PG1B_SOC_PINMAP_H_
 
+#include <devicetree.h>
 #include <soc.h>
 #include <em_gpio.h>
 

soc/arm/silabs_exx32/efr32fg13p/soc_pinmap.h

@@ -13,6 +13,7 @@
 #ifndef _SILABS_EFR32FG13P_SOC_PINMAP_H_
 #define _SILABS_EFR32FG13P_SOC_PINMAP_H_
 
+#include <devicetree.h>
 #include <soc.h>
 #include <em_gpio.h>
 

soc/arm/silabs_exx32/efr32fg1p/soc_pinmap.h

@@ -13,6 +13,7 @@
 #ifndef _SILABS_EFR32FG1P_SOC_PINMAP_H_
 #define _SILABS_EFR32FG1P_SOC_PINMAP_H_
 
+#include <devicetree.h>
 #include <soc.h>
 #include <em_gpio.h>
 

soc/arm/silabs_exx32/efr32mg12p/soc_pinmap.h

@@ -13,6 +13,7 @@
 #ifndef _SOC_PINMAP_H_
 #define _SOC_PINMAP_H_
 
+#include <devicetree.h>
 #include <em_gpio.h>
 
 #define GPIO_NODE DT_INST(0, silabs_gecko_gpio)