soc/samsung/exynos: Sync 'power.c' between chip variants

Change-Id: I06d83be840b49ee7523b34e1dba5ec038256b3f4
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/7918
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
soc/samsung/exynos5250/clock.c: Trivial whitespace fixes

Reduce difference with exynos5420/clock.c by fixing some whitespace
and an include directive.

Change-Id: Ifbdd61c8300f3988f5f729fe7d6124ac8a9b7821
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/7926
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
soc/samsung/exynos5250/clk.h: Trivial, fix spelling in comments

Change-Id: Iaacd4d7977ddeff4204acdc32d4d13fd88b6660b
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/7928
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>