drivers: thermal: Pass reg base parameter for CX Ipeak hardware init API

During CX Ipeak hardware initialization, driver passes wrong register
base address parameter to hardware initialization API and it fails to
initialize it. Pass correct register base parameter for CX Ipeak
hardware init API.

Change-Id: I2ffe0a0eb1470177d8475f3ea2c23ff51f55cff5
Signed-off-by: Manaf Meethalavalappu Pallikunhi <manafm@codeaurora.org>