qcacld-3.0: Refactor WE_SET_POWER processing

Currently the HDD function with the highest cyclomatic complexity is
__iw_setint_getnone(). The handing of WE_SET_POWER has a complexity
greater than 1, so refactor that logic into a separate function to
help reduce the complexity of __iw_setint_getnone().

Change-Id: I4a2c08faf7ec88ca35a353c778fa0269f35eb76d
CRs-Fixed: 2336977
1 file changed