[ARM] omap: move clock propagation into core omap clock code

Move the clock propagation calls for set_parent and set_rate into
the core omap clock code, rather than having these calls scattered
throughout the OMAP1 and OMAP2 implementations.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --cc arch/arm/mach-omap1/clock.c
Simple merge

diff --cc arch/arm/mach-omap2/clock.c
Simple merge

diff --cc arch/arm/plat-omap/clock.c
Simple merge