qcacmn: Define WMI_BEACON_TX_BUFFER_SIZE distinctly for WIN AP
The current value of WMI_BEACON_TX_BUFFER_SIZE imposes a limita-
tion on the size of the probe-response template that host can
send to target. This limit is good for offloading probe response
to target in case of soft-ap
WIN AP requires to support up to 16 VAPs in a single WIFI radio.
Also, 20TU probe response requirement for 6Ghz AP now requires
WIN AP to offload probe response
The current limit of 500 bytes is sufficient for soft-ap but does
not fulfill 16 6Ghz WIN AP requirement
Define WMI_BEACON_TX_BUFFER_SIZE for WIN AP as 1500 bytes
CRs-fixed: 2681235
Change-Id: I6251ee049451aa0c4a0482d772842a4f688b2f89