compressdev: fix socket ID type

compressdev: fix socket ID type

Socket ID is used and interpreted as integer, one of the possible
values for socket id is -1 (SOCKET_ID_ANY).
here socket_id is defined as unsigned 8 bit integer, so when putting
-1, it is interpreted as 255, which causes allocation errors when
trying to allocate from socket_id (255).

change socket_id from unsigned 8 bit integer to integer.

Fixes: ed7dd94f7f66 ("compressdev: add basic device management")
Cc: stable@dpdk.org
Signed-off-by: Raja Zidane <rzidane@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>