floss: update wbs supported pkt size and buffer size

Intel chip 8087:0a2b is violating the spec's preference of using 60
first. Update supported pkt size and buffer size to support it.

Tag: #floss
Flag: EXEMPT, floss change for ChromeOS only
Test: Deploy the floss to dut and verified BT Mic works
Test: mmm packages/modules/Bluetooth
Bug: 294104264
Change-Id: I8b1ca493ac314e2a8c1d3b8ae710109be8b4b6e6