refactor(runtime/include): move dev.h to dev_assign's rmm_stub

This is necessary so that 'struct pdev' is accessible from EL0_app
services.

Signed-off-by: Mate Toth-Pal <mate.toth-pal@arm.com>
Change-Id: Ibd4e4cba7a4b681e8a31db30ecefeb6a3080c757
1 file changed