arm64: dts: qcom: ipq5424: add spi nodes

arm64: dts: qcom: ipq5424: add spi nodes

Serial engines 4 and 5 on the IPQ5424 support SPI. Serial engine 4 is
exclusively dedicated to SPI, whereas serial engine 5 is firmware based
and supports SPI, I2C, and UART.

The SPI instance operates on serial engine 4, designated as spi0, and on
serial engine 5, designated as spi1. Add both the spi0 and spi1 nodes.

Signed-off-by: Manikanta Mylavarapu <quic_mmanikan@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250103063708.3256467-2-quic_mmanikan@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>