3.18-stable patches

3.18-stable patches

added patches:
	arm-mvebu-don-t-set-the-pl310-in-i-o-coherency-mode-when-i-o-coherency-is-disabled.patch
	dm-cache-fix-missing-err_ptr-returns-and-handling.patch
	dm-thin-don-t-allow-messages-to-be-sent-to-a-pool-target-in-read_only-or-fail-mode.patch
	drivers-net-cpsw-discard-dual-emac-default-vlan-configuration.patch
	drivers-rtc-rtc-s5m.c-terminate-s5m_rtc_id-array-with-empty-element.patch
	drm-fix-fb-helper-vs-mst-dangling-connector-ptrs-v2.patch
	drm-radeon-restore-gart-table-contents-after-pinning-it-in-vram-v3.patch
	drm-radeon-split-off-gart_get_page_entry-asic-hook-from-set_page_entry.patch
	drm-vmwgfx-replace-the-hw-mutex-with-a-hw-spinlock.patch
	nl80211-fix-per-station-group-key-get-del-and-memory-leak.patch
	pinctrl-at91-allow-to-have-disabled-gpio-bank.patch
	regulator-core-fix-race-condition-in-regulator_put.patch
	spi-pxa2xx-clear-cur_chip-pointer-before-starting-next-message.patch