ARM: OMAP5: Make errata i688 workaround available

Errata i688 is also applicable for OMAP5 based devices. Update the
code so that it can be enabled on OMAP5 devices.
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>

arch/arm/mach-omap2/Kconfig

@@ -408,7 +408,7 @@ config OMAP3_SDRC_AC_TIMING
 
 config OMAP4_ERRATA_I688
 	bool "OMAP4 errata: Async Bridge Corruption"
-	depends on ARCH_OMAP4 && !ARCH_MULTIPLATFORM
+	depends on (ARCH_OMAP4 || SOC_OMAP5) && !ARCH_MULTIPLATFORM
 	select ARCH_HAS_BARRIERS
 	help
 	  If a data is stalled inside asynchronous bridge because of back

arch/arm/mach-omap2/io.c

@@ -271,6 +271,14 @@ static struct map_desc omap54xx_io_desc[] __initdata = {
 		.length		= L4_PER_54XX_SIZE,
 		.type		= MT_DEVICE,
 	},
+#ifdef CONFIG_OMAP4_ERRATA_I688
+	{
+		.virtual	= OMAP4_SRAM_VA,
+		.pfn		= __phys_to_pfn(OMAP4_SRAM_PA),
+		.length		= PAGE_SIZE,
+		.type		= MT_MEMORY_SO,
+	},
+#endif
 };
 #endif
 
@@ -323,6 +331,7 @@ void __init omap4_map_io(void)
 void __init omap5_map_io(void)
 {
 	iotable_init(omap54xx_io_desc, ARRAY_SIZE(omap54xx_io_desc));
+	omap_barriers_init();
 }
 #endif
 /*