linux-phytec-ti

ARM: integrator: use clk_prepare_enable() for timer

The Integrator timer is using the clock framework to get the
timer frequency, but missed to prepare the clock before enabling.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>