jf-common: mount debugfs earlier

Change-Id: Ied633e63fd2c1ff9ada3b86fab331b9ce1d2f3cf
jf-common: bye /persdata

Change-Id: Id2a7ace59cf3e37f42f18f450d32e2242eb69d54
jf-common: these lines are duplicated

Change-Id: Ic6ac2a6df0ef3dfe08eb3f7524788a33cb2cd48f