- Also remove the nuttx private shm.h file nuttx/mm/shm.h, which became redundant
- Also remove the gran allocator initialization/release in binfmt since common
vpage allocator is initialized in group_create/group_leave
Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
This will allow changing the underlying backend, i.e. granule allocator,
to something more efficient, if this is needed later.
Also, it gives easier access to the common SHM book keeping.
