dt-bindings: mailbox: qcom-ipcc: Add NSP1 client

Add a client for the NSP1 found in some recent Qualcomm platforms.
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220629041438.1352536-3-bjorn.andersson@linaro.org

include/dt-bindings/mailbox/qcom-ipcc.h

@@ -30,6 +30,7 @@
 #define IPCC_CLIENT_PCIE1		14
 #define IPCC_CLIENT_PCIE2		15
 #define IPCC_CLIENT_SPSS		16
+#define IPCC_CLIENT_NSP1		18
 #define IPCC_CLIENT_TME			23
 #define IPCC_CLIENT_WPSS		24