devfreq: Add Network-on-Chip bandwidth monitoring probe
(cherry picked from commit c87b1a860be768c3f021e5b74b228e404a6c479d)

Conflicts:
	drivers/devfreq/Kconfig
	drivers/devfreq/Makefile
	drivers/devfreq/exynos/Makefile
exynos5410: fixed the "asynchronous external abort" failure due
to inexistent DMA.
(cherry picked from commit 1a8bffc27cb31cab6a8249af10d2c7ed10883eae)

Signed-off-by: Humberto Silva Naves <hsnaves@gmail.com>