ARM: dts: msm: set correct property flag for adv regulator

In current configuration of adv regulator in device tree,
there is a spelling mistake because of which the active-high
flag for the regulator is not set properly. This change fixes
the spelling mistake.

CRs-fixed: 965732
Change-Id: Idfae0851359e2b02247cd85706f342e2a6353d34
Signed-off-by: Sandeep Panda <spanda@codeaurora.org>