hal_pru_generic: Fixup depend file generation
hal_pru_generic: Fixup depend file generation

Explicitly set the file type to 'c' and set the output filename
using -o

Signed-off-by: Charles Steinkuehler <cbdb0cc7f3f5b4be81a75fa7242590e3e9882e1e@steinkuehler.net>

strahlex/machinekit,strahlex/machinekit,strahlex/machinekit,strahlex/machinekit,strahlex/machinekit,strahlex/machinekit,strahlex/machinekit