i2c: davinci: Add helper functions for power management
i2c: davinci: Add helper functions for power management

Add i2c reset control and clock divider calculation functions
which will be useful for power management features.

Signed-off-by: Chaithrika U S <11b8a6491bc984cfa671197e7fd35937415978d5@ti.com>
Acked-by: Kevin Hilman <f9849b02abe18c1ece6bd40346458ed53f49d31b@deeprootsystems.com>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs