qcacmn: Support none 4k page size kernel

DP uses multi page allocation for tx/rx descriptor.
ID and offset mask of decriptor is based on 4096 which
couples with Kernel's MMU PAGE_SIZE. This cause trouble
when deploy driver on none-4K page size kernel.
Set qdf_dp_blockmem_size to 4096 so that DP won't
depend on kernel page size.

Change-Id: I17f5c10b394e8709e6b4b153f3dd094cf792787f
CRs-Fixed: 3235246

dp/wifi3.0/dp_internal.h

@@ -26,6 +26,8 @@
 
 #define DP_PEER_WDS_COUNT_INVALID UINT_MAX
 
+#define DP_BLOCKMEM_SIZE 4096
+
 /* Alignment for consistent memory for DP rings*/
 #define DP_RING_BASE_ALIGN 32