soc: arm: Fix header inclusion from deprecated paths

This commit fixes Cortex-M header inclusions from the deprecated paths.

The Cortex-M headers were relocated from `include/arch/arm/cortex_m` to
`include/arch/arm/aarch32/cortex_m` by the refactoring done in the
commit d048faacf234061f6fb70e4926446268a68442bd.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
6 files changed