arm64: dts: qcom: db845c: Enable LVS 1 and 2

vreg_lvs1a_1p8 and vreg_lvs2a_1p8 are both feeding pins in the low speed
connectors and should as such alway be on, so enable them.

Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>