add missing PCS3 for MCF5445x

This patch adds the code for handling PCS3 (DSPI chip select 3) in
cpu_init.c and m5445x.h

Signed-off-by: Wolfgang Wegner <w.wegner at astro-kom.de>

arch/m68k/cpu/mcf5445x/cpu_init.c

@@ -238,6 +238,10 @@ int cfspi_claim_bus(uint bus, uint cs)
 		gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS2_PCS2;
 		gpio->par_dspi |= GPIO_PAR_DSPI_PCS2_PCS2;
 		break;
+	case 3:
+		gpio->par_dma &= GPIO_PAR_DMA_DACK0_UNMASK;
+		gpio->par_dma |= GPIO_PAR_DMA_DACK0_PCS3;
+		break;
 	case 5:
 		gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS5_PCS5;
 		gpio->par_dspi |= GPIO_PAR_DSPI_PCS5_PCS5;
@@ -264,6 +268,9 @@ void cfspi_release_bus(uint bus, uint cs)
 	case 2:
 		gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS2_PCS2;
 		break;
+	case 3:
+		gpio->par_dma &= GPIO_PAR_DMA_DACK0_UNMASK;
+		break;
 	case 5:
 		gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS5_PCS5;
 		break;

arch/m68k/include/asm/m5445x.h

@@ -314,6 +314,7 @@
 #define GPIO_PAR_DMA_DREQ1_GPIO		(0x00)
 #define GPIO_PAR_DMA_DACK0_UNMASK	(0xF3)
 #define GPIO_PAR_DMA_DACK0_DACK1	(0x0C)
+#define GPIO_PAR_DMA_DACK0_PCS3		(0x08)
 #define GPIO_PAR_DMA_DACK0_ULPI_DIR	(0x04)
 #define GPIO_PAR_DMA_DACK0_GPIO		(0x00)
 #define GPIO_PAR_DMA_DREQ0_DREQ0	(0x01)