arm64: dts: qcom: sa8775p: Add default pin configurations for QUP SEs

arm64: dts: qcom: sa8775p: Add default pin configurations for QUP SEs

Default pinctrl configurations for all QUP (Qualcomm Universal Peripheral)
Serial Engines (SEs) are missing in the SoC device tree. These
configurations are required by client teams when enabling any SEs as I2C,
SPI, or Serial protocols.

Add default pin configurations for Serial Engines (SEs) for all supported
protocols, including I2C, SPI, and UART, to the sa8775p device tree.  This
change facilitates slave device driver clients to enable usecase with
minimal modifications.

Remove duplicate pin configurations from target-specific file as same pin
configuration is included in the SoC device tree.

Acked-by: Mukesh Kumar Savaliya <quic_msavaliy@quicinc.com>
Signed-off-by: Viken Dadhaniya <quic_vdadhani@quicinc.com>
Link: https://lore.kernel.org/r/20250509090443.4107378-1-quic_vdadhani@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>