Support dynamic antenna switch in TDLS:
1. If TDLS NSS is configured to be 1x1, TDLS connections not teardown;
2. When antenna mode switched from 2x2 to 1x1, TDLS connections teared
down and EAGAIN returned; When antenna mode switched from 1x1 to 2x2,
TDLS connections is still teardown, but success in one trial.
Change-Id: I1877002122a96dc8f40c796f8a1b938199d3b67a
CRs-Fixed: 2080461