
Some platforms do not support cached descripts for DP Rings. Add support to set WLAN_CFG_DST_RING_CACHED_DESC to 0 and make __qdf_nbuf_dma_inv_range as stub if DP_NO_CACHE_DESC_SUPPORT flag is enabled during compilation. Change-Id: Ic6b483be25c32f3f3c79b170fb7d7557a232b4ac CRs-Fixed: 3027649