qcacld-3.0: Allocate scan filter memory from dynamic memory pool

csr_scan_get_result API defined 'struct scan_filter' of size
800bytes on stack and larger size memory blocks on stack is not
preferred because the stack size is limited.

Modified the memory allocation to dyanmic for scan filter.

Change-Id: I40cb0d97e0451d50aca3e9485327a4ce709e6020
CRs-Fixed: 2332496
1 file changed