Sometimes we need PDEV suspend mode, WMI_PDEV_SUSPEND_CMDID and
WMI_PDEV_RESUME_CMDID. But currently design, only support WoW
suspend or not support two choices. And, there are two confused
ini configuration, gDisableWow and gEnableWoW.
1. Add new ini gSuspendMode to set suspend mode. Default 2.
0, does not support suspend
1, legency pdev suspend mode
2, WoW suspend mode
2. Clean gDisableWow. It is replaced by gSuspendMode=0.
HDD suspend/resume function get the value by new API
ucfg_pmo_get_suspend_mode().
Change-Id: Icbeef3df6879ca2054f64e0292e9b9469c4936d4
CRs-fixed: 2940788