arm64: dts: qcom: qcm6490: Add device-tree for Fairphone 5

arm64: dts: qcom: qcm6490: Add device-tree for Fairphone 5

Add device tree for the Fairphone 5 smartphone which is based on
the QCM6490 SoC.

Supported features are, as of now:
* Bluetooth
* Debug UART
* Display via simplefb
* Flash/torch LED
* Flip cover sensor
* Power & volume buttons
* RTC
* SD card
* USB
* Various plumbing like regulators, i2c, spi, etc

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Tested-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230919-fp5-initial-v2-7-14bb7cedadf5@fairphone.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>