gve: update gve.rst

Add a note about QPL and RDA mode

BUG=b/291799463

cos-patch: bug
Change-Id: I0173819797840c19325caa9181238343dd89eca5
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/54470
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Main-Branch-Verified: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Oleksandr Tymoshenko <ovt@google.com>
1 file changed