arm: spear: enable GPIO3 and 4 clocks when the GPIO controller driver is built

There are multiple GPIOs that can be used with the same driver depending
on the CONFIG_GPIO_BASE defined in the controller driver.

GPIO3 and 4 require a clock to be enabled so let's enable them when the
driver is built.

Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com>

arch/arm/cpu/arm926ejs/spear/cpu.c

@@ -49,6 +49,9 @@ int arch_cpu_init(void)
 #if defined(CONFIG_USB_EHCI_SPEAR)
 	periph1_clken |= PERIPH_USBH1 | PERIPH_USBH2;
 #endif
+#if defined(CONFIG_SPEAR_GPIO)
+	periph1_clken |= MISC_GPIO3ENB | MISC_GPIO4ENB;
+#endif
 
 	writel(periph1_clken, &misc_p->periph1_clken);
 

arch/arm/include/asm/arch-spear/spr_misc.h

@@ -144,6 +144,7 @@ struct misc_regs {
 #define MISC_USBDENB			0x01000000
 #define MISC_ETHENB			0x00800000
 #define MISC_SMIENB			0x00200000
+#define MISC_GPIO3ENB			0x00040000
 #define MISC_GPT3ENB			0x00010000
 #define MISC_GPIO4ENB			0x00002000
 #define MISC_GPT2ENB			0x00000800