Rename SHM functions from alloc/free_param_data to alloc/free_shm_data
Rename SHM functions from alloc/free_param_data to alloc/free_shm_data

This naming is historical, we used to export the parameters through SHM.
These days it's just confusing.

Signed-off-by: Peter Hutterer <b9c50af7afa7642f6f854434cda9ffe54ece8b85@who-t.net>
Reviewed-by: Daniel Stone <3d0f3b9ddcacec30c4008c5e030e6c13a478cb4f@fooishbar.org>

mad-s/xf86-input-synaptics-absolute,mad-s/xf86-input-synaptics-absolute