mfd: Code cleanup for pm8606 sub-dev initialization
mfd: Code cleanup for pm8606 sub-dev initialization

Collect all the sub-devices of pm8606 initialization into
device_pm8606_init() for code clean up.

Signed-off-by: Jett.Zhou <ca4f54940f83a0ae1d34514f16f656a0c0854288@marvell.com>
Signed-off-by: Samuel Ortiz <0ba86cb3f08bbb861958e54bd3438887adb4263c@linux.intel.com>

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