fix(drivers/marvell/comphy-3700): fix address overflow
fix(drivers/marvell/comphy-3700): fix address overflow

Physical address has to be stored in 64-bit data type as Armada 3720 is
64-bit platform. Driver already uses uintptr_t type for this purpise.

Change type of 'offset' variables in mvebu_a3700_comphy_usb3_power_on()
and mvebu_a3700_comphy_sgmii_power_on() / off() functions to uintptr_t
as in this variable is stored physical address of registers.

Signed-off-by: Pali Rohár <84fc5b246d98b743737687ddff985e1cb7a72c1e@kernel.org>
Change-Id: I69581714f8899d21cc1a27005747708f0f1cd933

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