libcgroup: Fix makefile entry for make clean
libcgroup: Fix makefile entry for make clean

Don't know when this change happened, or got missed. Correcting it
now.

Signed-off-by: Dhaval Giani <dhaval@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>



git-svn-id: 312abad21b46f471ee9c8bf93af65050a03353f9@171 4f4bb910-9a46-0410-90c8-c897d4f1cd53

rafalmiel/libcg,rafalmiel/libcg,rafalmiel/libcg,rafalmiel/libcg,jrfastab/Linux-cgdcbxd,jrfastab/Linux-cgdcbxd,jrfastab/Linux-cgdcbxd,jrfastab/Linux-cgdcbxd