phy: cadence: Sierra: Rename some regmap variables to be in sync with Sierra documentation

No functional change. Rename some regmap variables as mentioned in Sierra
register description documentation.

Signed-off-by: Swapnil Jakhade <sjakhade@cadence.com>
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
1 file changed