CNB: net: consolidate neif_rx() and make it callable from any context

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2089703
Tested: basic network tests on lo, tun, veth

Series consolidate neif_rx() and make it callable from any context.
It is backport for these upstream series:
da54d75bebf4d8 ("Merge branch 'netdev-RT'")
9f9919f73c94ae ("Merge branch 'netif_rx'")
83b7b77af37a89 ("Merge branch 'netif_rx-conversions-part2'")
e21af12622c0fb ("Merge branch 'netif_rx-part3'")

Omitted-fix: b903117b48681e12fae38e09c874f38c45186dc6
Omitted-fix: e1f9e434617fb28097223d9484de66218bc0b52d

Signed-off-by: Petr Oros poros@redhat.com