arm64: dts: qcom: sc7280-idp: Add vcc-supply for qfprom

Add vcc-supply for the IDP boards that was missed when the
qfprom device tree properties were added for the sc7280 SoC.

Fixes: c1b2189a

 ("arm64: dts: qcom: sc7280: Add qfprom node")
Reported-by: satya priya <skakit@codeaurora.org>
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1631530735-19811-1-git-send-email-rnayak@codeaurora.org