cnss: add support for power up sequence in CNSS SDIO

To power up the Wi-Fi card GPIO and voltage regulator
need to be configured properly with a certain sequence,
so configure GPIO and enable voltage regulators to enable
the power up support in CNSS SDIO platform driver.

CRs-Fixed: 920931
Change-Id: I41ced578f0aec1339a9f626352d4225ed901bb76
Signed-off-by: Sarada Prasanna Garnayak <sgarna@codeaurora.org>