arch: Convert returning codes to errno.h

This patch replaces all occurrences of DEV_* codes by errno.h codes at
the arch layer.

Change-Id: I1a1ab6d0481f3660ad032e2690d2577245fe1f34
Signed-off-by: Andre Guedes <andre.guedes@intel.com>

arch/arc/soc/quark_se_ss/soc_config.c

@@ -27,7 +27,7 @@ static int arc_quark_se_ipm_init(void)
 	IRQ_CONNECT(QUARK_SE_IPM_INTERRUPT, QUARK_SE_IPM_INTERRUPT_PRI,
 		    quark_se_ipm_isr, NULL, 0);
 	irq_enable(QUARK_SE_IPM_INTERRUPT);
-	return DEV_OK;
+	return 0;
 }
 
 static struct quark_se_ipm_controller_config_info ipm_controller_config = {
@@ -68,7 +68,7 @@ static int uart_ns16550_init(struct device *dev)
 		      INT_ENABLE_ARC_BIT_POS);
 #endif /* CONFIG_UART_NS16550_PORT_1 */
 
-	return DEV_OK;
+	return 0;
 }
 
 SYS_INIT(uart_ns16550_init, PRIMARY, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);

arch/arm/soc/ti_lm3s6965/soc_config.c

@@ -48,7 +48,7 @@ static int uart_stellaris_init(struct device *dev)
 	RCGC1 |= RCGC1_UART2_EN;
 #endif
 
-	return DEV_OK;
+	return 0;
 }
 
 SYS_INIT(uart_stellaris_init, PRIMARY, CONFIG_KERNEL_INIT_PRIORITY_DEVICE);

arch/x86/soc/quark_se/soc.c

@@ -22,6 +22,8 @@
  * hardware for the Quark SE BSP.
  */
 
+#include <errno.h>
+
 #include <nanokernel.h>
 #include <misc/printk.h>
 #include <misc/__assert.h>
@@ -57,7 +59,7 @@ static int arc_init(struct device *arg)
 	if (!SCSS_REG_VAL(SCSS_SS_STS)) {
 		/* ARC shouldn't already be running! */
 		printk("ARC core already running!");
-		return DEV_FAIL;
+		return -EIO;
 	}
 
 	/* Address of ARC side __reset stored in the first 4 bytes of arc.bin,
@@ -91,7 +93,7 @@ static int arc_init(struct device *arg)
 skip_arc_init:
 #endif
 
-	return DEV_OK;
+	return 0;
 }
 
 SYS_INIT(arc_init, SECONDARY, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
@@ -113,7 +115,7 @@ static int platform_uart_init(struct device *arg)
 	SCSS_INTERRUPT->int_uart_mask[1] &= INT_UNMASK_IA;
 #endif
 
-	return DEV_OK;
+	return 0;
 }
 
 SYS_INIT(platform_uart_init, PRIMARY, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);

arch/x86/soc/quark_se/soc_config.c

@@ -32,7 +32,7 @@ static int x86_quark_se_ipm_init(void)
 	IRQ_CONNECT(QUARK_SE_IPM_INTERRUPT, QUARK_SE_IPM_INTERRUPT_PRI,
 		    quark_se_ipm_isr, NULL, 0);
 	irq_enable(QUARK_SE_IPM_INTERRUPT);
-	return DEV_OK;
+	return 0;
 }
 
 static struct quark_se_ipm_controller_config_info ipm_controller_config = {