arm64: dts: qcom: sdm630: Add qfprom subnodes

These will be required for USB and Adreno support.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210728222542.54269-7-konrad.dybcio@somainline.org
[bjorn: y/_/-/ in gpu_speed_bin]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>