arm64: dts: qcom: Introduce Eliza Soc base dtsi

arm64: dts: qcom: Introduce Eliza Soc base dtsi

Introduce the initial support for the Qualcomm Eliza SoC. It comes in
different flavors. There is SM7750 for mobiles and then QC7790S/M for IoT.
Describe the common parts under a common dtsi.

The initial submission enables support for:
- CPU nodes with cpufreq and cpuidle support
- Global Clock Controller (GCC)
- Resource State Coordinator (RSC) with clock controller & genpd provider
- Interrupt controller
- Power Domain Controller (PDC)
- Vendor specific SMMU
- SPMI bus arbiter
- Top Control and Status Register (TCSR)
- Top Level Mode Multiplexer (TLMM)
- Debug UART
- Reserved memory nodes
- Interconnect providers
- System timer
- UFS

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Co-developed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260318-eliza-base-dt-v3-2-8a50bd2201ed@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>