dfc: Re-send DFC_CONFIG command

Re-send QMAP DFC_CONFIG command if no ack is received upon
first QMAP indication.

Change-Id: I33ec5cbbf3550d1df03ca1dd990bf8ad58ad9582
Acked-by: Weiyi Chen <weiyic@qti.qualcomm.com>
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>