Build libxml2.so

Needed by /system/bin/cnd

Change-Id: Ic47fd3082dd19020c076d16972288d62f830013e

Conflicts:
	g2.mk
g2: disable gentle fair sleepers for beter UI response
msm8974: Enable CPU boost hints

 * Massively improve the user experience and eliminate ALL the
   jank when scrolling.
Merge branch 'upstream' into kk-clean