wil6210: increase RX rings and RX buff array size

In Talyn-MB, the 11ad throughput is higher and performance drops
may occur in the current RX configuration due to unavailability
of Rx buffers.
Increase the RX descriptor ring, RX status ring and number of RX
buffers to stabilize the performance in high throughput.

Change-Id: I2c76e05aa1cb0e3a3a654f9fa0cb05e1fc8d9f2f
Signed-off-by: Maya Erez <merez@codeaurora.org>