octeontx2-pf: Fix adding mbox work queue entry when num_vfs > 64

commit 9ded24244043aba495f0684028d25b7aa5f1f563 from
git@git.assembla.com:cavium/WindRiver.linux.git

When more than 64 VFs are enabled for a PF. Thw mbox communication
between VF and PF is notworking as mbox work queue entries for
few VF are skipped due to misscalculation of VFs numbers.

Fixes: d424b6c0 ("octeontx2-pf: Enable SRIOV and added VF mbox handling")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Change-Id: I2fc064ebcb9f21a996813a0fd71bee42d34eb306
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/kernel/linux/+/106318


Reviewed-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Tested-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: Ruiqiang Hao <Ruiqiang.Hao@windriver.com>