libmemif: fix the buffer size
libmemif: fix the buffer size

Type: fix

Previously, libmemif can only use buffer size which
have to be power of 2. memif protocol does not enforce
this. This patch fixes this issue.

Signed-off-by: Mohsin Kazmi <3be96aed1fe21f963e790909e1d3a8e57ce776f2@cisco.com>
Change-Id: Ic71e6a51685e2c2228c744920797064d4c7c65c9

chrisy/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,chrisy/vpp