ARM: mmp: register internal sram bank

MMP2 have the internal sram, this sram can be allocated
for video, power management and secure processor.

Now the sram usage is:
0xd1000000 ~ 0xd101ffff (128KB) : reserved for secure processor
0xd1020000 ~ 0xd1037fff (96KB)  : for video and PM

Register the internal sram's second half 96KB buffer,
so that video and PM can dynamically alloc/free from it.

Signed-off-by: Leo Yan <leoy@marvell.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

arch/arm/mach-mmp/brownstone.c

@@ -191,6 +191,11 @@ static struct sram_platdata mmp2_asram_platdata = {
 	.granularity	= SRAM_GRANULARITY,
 };
 
+static struct sram_platdata mmp2_isram_platdata = {
+	.pool_name	= "isram",
+	.granularity	= SRAM_GRANULARITY,
+};
+
 static void __init brownstone_init(void)
 {
 	mfp_config(ARRAY_AND_SIZE(brownstone_pin_config));
@@ -202,6 +207,7 @@ static void __init brownstone_init(void)
 	mmp2_add_sdhost(0, &mmp2_sdh_platdata_mmc0); /* SD/MMC */
 	mmp2_add_sdhost(2, &mmp2_sdh_platdata_mmc2); /* eMMC */
 	mmp2_add_asram(&mmp2_asram_platdata);
+	mmp2_add_isram(&mmp2_isram_platdata);
 
 	/* enable 5v regulator */
 	platform_device_register(&brownstone_v_5vp_device);