arm64: dts: qcom: sdm845-shift-axolotl: enable SLPI

Enable the SLPI DSP on the SHIFTPHONES SHIFT6mq phone with a
Qualcomm SDM845 SoC.
Signed-off-by: Dylan Van Assche <me@dylanvanassche.be>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230406173148.28309-6-me@dylanvanassche.be

arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts

@@ -572,6 +572,11 @@ &qupv3_id_1 {
 	status = "okay";
 };
 
+&slpi_pas {
+	firmware-name = "qcom/sdm845/axolotl/slpi.mbn";
+	status = "okay";
+};
+
 &tlmm {
 	gpio-reserved-ranges = <0 4>, <81 4>;