arm64: dts: qcom: sdm845-db845c: Fix reset-pin of ov8856 node

arm64: dts: qcom: sdm845-db845c: Fix reset-pin of ov8856 node

Switch reset pin of ov8856 node from GPIO_ACTIVE_HIGH to GPIO_ACTIVE_LOW,
this issue prevented the ov8856 from probing properly as it did not respon
to I2C messages.

Fixes: aaa971ff94a6 ("arm64: dts: qcom: sdm845-db845c: Add ov8856 & ov7251
camera nodes")

Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://lore.kernel.org/r/20201221100955.148584-1-robert.foss@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>