octeontx2-pcicons: Adjust padding size for RT

commit 662957fa4f29f4ff92f5432e1d57c89d0acce61d from
git@git.assembla.com:cavium/WindRiver.linux.git

spinlock size is different in RT. Adjust padding in
struct octeontx_pcie_console_nexus

Change-Id: Ic6fa05df7b1be903ba3370e48041e071624cd0fc
Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/kernel/linux/+/80344
Reviewed-by: Rick Farrington <rfarrington@marvell.com>
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>