Linux 3.4.1 -> 3.4.74

Conflicts:
	arch/arm/kernel/perf_event.c
	arch/arm/mm/dma-mapping.c
	drivers/base/power/main.c
	drivers/gpu/drm/radeon/radeon_mode.h
	drivers/mmc/host/sdhci.c
	drivers/usb/core/hub.c
	fs/buffer.c
	fs/ecryptfs/mmap.c
	fs/jbd2/transaction.c
	include/net/tcp.h
	kernel/hrtimer.c
	mm/vmscan.c
	net/ipv4/fib_semantics.c
	net/irda/af_irda.c