[CORE] Beautify comments in vmm_clocks_calc_mult_shift()

Signed-off-by: Anup Patel <anup@brainfault.org>
[CORE] blockdev: Added notifier events

Signed-off-by: Anup Patel <anup@brainfault.org>
Merge remote-tracking branch 'upstream/master' into dev_exynos4