arm/dt: mpq8092-regulator: Fix min. voltage level for LDO13

LD013 can support two voltage levels 1.8V and 2.95V.
Update the regulator-min-microvolt parameter so that
it reflects correct min. voltage supported (1.8V).

Change-Id: I129ce95583c989b6e96275fcea7cf93984a68d3b
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
1 file changed