i2c-omap: Use dynamic clocking also on OMAP1 CPUs
This patch will fix the i2c-omap "controller timed out" error on OMAP1710 (most probably will apply to 1510 as well). Error happens randomly if dyn_tick is activated (CONFIG_NO_IDLE_HZ=y) and reason was that ARMXOR_CK clock domain was stopped during MPU idle. Patch basically creates and uses virtual i2c_fck clock domain which prevents that its parent ARMXOR_CK is not stopped during MPU idle whenever i2c_fck is enabled. Patch also makes i2c-omap implementation between 24xx and OMAP1 more consistent with the clock usage and fixes two minor bugs. Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com> Signed-off-by: Juha Yrjl <juha.yrjola@nokia.com>
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