defconfig: direwolf_auto: Enable SPMI PMIC drivers

Enable MFD SPMI PMIC driver and several SPMI and PMIC drivers
which are needed to provide baseline support of PMIC peripherals.

Change-Id: I0d4150893a8fe0c2381c7c8328e07d77981fa907
Signed-off-by: Veera Vegivada <vvegivad@codeaurora.org>