mk: generalize strict alignment warning handling
mk: generalize strict alignment warning handling

Rather than allowing just armv7 to have non-fatal strict alignment
cast warnings, generalize it to both strict alignment architectures,
armv7 and tile.

Signed-off-by: Chris Metcalf <074881f6f5da4d3b5278870ff234d1077ee622c0@mellanox.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk