arm64: dts: qcom: Add base qcs6490-rb3gen2 board dts

Add DTS for Qualcomm qcs6490-rb3gen2 board which uses
QCS6490 SoC. This adds debug uart and usb support along
with regulators found on this board.
Co-developed-by: Naina Mehta <quic_nainmeht@quicinc.com>
Signed-off-by: Naina Mehta <quic_nainmeht@quicinc.com>
Signed-off-by: Komal Bajaj <quic_kbajaj@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
Link: https://lore.kernel.org/r/20231129065816.26409-4-quic_kbajaj@quicinc.comSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/Makefile

@@ -90,6 +90,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= qcm6490-fairphone-fp5.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= qcm6490-idp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= qcs404-evb-1000.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= qcs404-evb-4000.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= qcs6490-rb3gen2.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= qdu1000-idp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= qrb2210-rb1.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= qrb4210-rb2.dtb