arm64: dts: qcom: msm8996: Move regulator consumers to db820c

[ Upstream commit 80884431430995254257848d1a05266a2b791c58 ]

Supplies for the various components in the SoC depends on board layout,
so move the supply definitions to db820c.dtsi instead of carrying them
in the platform dtsi.

Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Stable-dep-of: 68c4c20848d7 ("arm64: dts: qcom: msm8996: Define UFS UniPro clock limits")
Signed-off-by: Sasha Levin <sashal@kernel.org>