refactor(drivers/marvell/comphy-3700): rename Miscellaneous Control register constants

Rename the Miscellaneous Control register constants from MISC_REGx to
MISC_CTRLx.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Change-Id: I4d43bbda44b090de4ecf2d52cfc468f9683cc3b5
2 files changed