ARM: OMAP4: fix irq and clock name for dsp-iommu

Irq and clock names were wrong for dsp iommu configuration
for omap4.

- Renamed tesla_ick to dsp_fck:
   This is required because the new naming convention introduced
   by: commit 0e433271 "OMAP4 clock: Fix clock names and align
   with hwmod names"

- Renamed INT_44XX_DSP_MMU to OMAP44XX_IRQ_TESLA_MMU.
   Naming convention adopted since: commit e927f8d0 "omap4: Add
   auto-generated irq and dma headers"

- dsp-iommu is enabled by default.
Signed-off-by: Juan Gutierrez <jgutierrez@ti.com>
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>

arch/arm/mach-omap2/omap-iommu.c

@@ -73,19 +73,17 @@ static struct iommu_device omap4_devices[] = {
 			.da_end = 0xFFFFF000,
 		},
 	},
-#if defined(CONFIG_MPU_TESLA_IOMMU)
 	{
 		.base = OMAP4_MMU2_BASE,
-		.irq = INT_44XX_DSP_MMU,
+		.irq = OMAP44XX_IRQ_TESLA_MMU,
 		.pdata = {
 			.name = "tesla",
 			.nr_tlb_entries = 32,
-			.clk_name = "tesla_ick",
+			.clk_name = "dsp_fck",
 			.da_start = 0x0,
 			.da_end = 0xFFFFF000,
 		},
 	},
-#endif
 };
 #define NR_OMAP4_IOMMU_DEVICES ARRAY_SIZE(omap4_devices)
 static struct platform_device *omap4_iommu_pdev[NR_OMAP4_IOMMU_DEVICES];