Merge branch 'net-stmmac-sanitise-stmmac_is_jumbo_frm'

Russell King says:

====================
net: stmmac: sanitise stmmac_is_jumbo_frm()

stmmac_is_jumbo_frm() takes skb->len, which is unsigned int, but the
parameter is passed as an "int" and then tested using signed
comparisons. This can cause bugs. Change the parameter to be unsigned.

Also arrange for it to return a bool.
====================

Link: https://patch.msgid.link/aRxDqJSWxOdOaRt4@shell.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>