PM / devfreq: Use devm_* functions in exynos4_bus.c

devm_* functions are device managed functions and make cleanup code
simpler and smaller.
devm_kzalloc and devm_regulator_get functions are used.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
[renamed the patch title by MyungJoo Ham]
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Git-commit: d7895052d97cde63b34e5185da28052384fa8564
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Change-Id: Ifb83c1e6b3b065e6fe51409ca316524ca93aa7f9
Signed-off-by: Jeremy Gebben <jgebben@codeaurora.org>
1 file changed