arm64: dts: qcom: msm8939-longcheer-l9100: Add initial device tree

arm64: dts: qcom: msm8939-longcheer-l9100: Add initial device tree

This dts adds support for BQ Aquaris M5 (Longcheer L9100) released in
2015.

Add a device tree with initial support for:

- GPIO keys
- Hall sensor
- SDHCI
- WCNSS (BT/WIFI)
- Accelerometer/Magnetometer
- Vibrator
- Touchscreen
- Front flash

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: André Apitzsch <git@apitzsch.eu>
Link: https://lore.kernel.org/r/20230827-bq_m5-v4-2-f8435fb8f955@apitzsch.eu
Signed-off-by: Bjorn Andersson <andersson@kernel.org>