wcnss: update the regulator parsing and config method

Use the resource managed regulator API for the wcnss
regulator parsing and configuration.

CRs-Fixed: 2214888
Change-Id: Ib376893c26bb9aa797e7e9df25cc7302a84a3726
Signed-off-by: Sarada Prasanna Garnayak <sgarna@codeaurora.org>