input: qcom-hv-haptics: Don't initialize swr regulator for HAP_CFG V3

Since HAP_CFG V3 doesn't support soundwire haptics, skip initializing
swr regulator so that swr_haptics cannot use it.

Change-Id: I64d783aabcf699233c68a96af5ffd922d361fb24
Signed-off-by: Shyam Kumar Thella <sthella@codeaurora.org>