marvell: drivers: correct RTC init sequence
marvell: drivers: correct RTC init sequence

It turned out that resetting the RTC time register is not
necessary during initial configuration. Safely remove it
from the sequence.

Change-Id: Id2b9c7db44a8c8dbe88a7f8a21695b72a7fd78ee
Signed-off-by: Marcin Wojtas <99c15d92ebc0e182e5c4df7c7e9e30ce96a863df@semihalf.com>
Reviewed-by: Nadav Haklai <597b950a11648b2814571a5c9aa3212afe97b3f8@marvell.com>
Reviewed-by: Kostya Porotchkin <4c7b7a89ae2c24f675bc0a94dfa7c7466687a3de@marvell.com>

achingupta/arm-trusted-firmware,achingupta/arm-trusted-firmware