net: stmmac: add helper to get size of a receive descriptor

Add and use a helper to get the size of the hardware receive
descriptor.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1w1LW9-0000000DGS9-1mzX@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Russell King (Oracle) 2026-03-14 09:42:45 +00:00 • committed by Jakub Kicinski
commit 4f6280c450