systemui: fix qs tiles layout height in landscape mode

Change-Id: Ic7d0e9c98490995ba5e0923f6de86f54287f99d0
JIRA: CYAN-3589
Issue: https://jira.cyanogenmod.org/browse/CYAN-3589
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>

Conflicts:
	packages/SystemUI/res/values-land/dimens.xml