ARM: fix executability of CMA mappings

The CMA region was being marked executable:

0xdc04e000-0xdc050000           8K     RW x      MEM/CACHED/WBRA
0xdc060000-0xdc100000         640K     RW x      MEM/CACHED/WBRA
0xdc4f5000-0xdc500000          44K     RW x      MEM/CACHED/WBRA
0xdcce9000-0xe0000000       52316K     RW x      MEM/CACHED/WBRA

This is mainly due to the badly worded MT_MEMORY_DMA_READY symbol, but
there are also a few other places in dma-mapping which should be
corrected to use the right constant.  Fix all these places:

0xdc04e000-0xdc050000           8K     RW NX     MEM/CACHED/WBRA
0xdc060000-0xdc100000         640K     RW NX     MEM/CACHED/WBRA
0xdc280000-0xdc300000         512K     RW NX     MEM/CACHED/WBRA
0xdc6fc000-0xe0000000       58384K     RW NX     MEM/CACHED/WBRA

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: EXYNOS: Readd S3C_PA_WDT define to mach/map.h header

This compatibility define is still used in arch/arm/plat-samsung/include/plat/uncompress.h
drm/exynos: g2d: add exynos4212 as a compatible device.
ARM: EXYNOS: Add secure firmware support for l2x0 init

Based on a patch by Gu1 <gu1@aeroxteam.fr>
ARM: dts: Add arm-pmu node for exynos4412

The Exynos4412 has 4 cpus and each has a performance counter.
Thus, we should define 4 interrupts which are combined by irq-combiner for arm
pmu.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>