qcacmn: Remove obsolete dmac_inv_range API

Remove obsolete dmac_inv_range API, instead use
qdf_mem_dma_sync_single_for_cpu API where ever required.
https://www.kernel.org/doc/Documentation/DMA-API-HOWTO.txt

Change-Id: I44f14e6c87c1086decc600f59f298b7b8a94bc82
CRs-Fixed: 2215678
2 files changed