vlib: fix buffer pool alignment size
vlib: fix buffer pool alignment size

Alignment size should be CLIB_CACHE_LINE_BYTES(64)
instead of CLIB_LOG2_CACHE_LINE_BYTES(6)

Type: fix

Signed-off-by: Tianyu Li <1c599f4cedabb0c78bbfcbf824f5988c7b6a2be4@arm.com>
Change-Id: If2d5ae324093be64454377866297f5e76ccddc93

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