soc: qcom: smd-rpm: Add QCOM_SMD_RPM_STATE_NUM

Add a preprocessor define to indicate the number of RPM contexts/states.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Acked-by: Georgi Djakov <djakov@kernel.org>
Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-2-09c78c175546@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

include/linux/soc/qcom/smd-rpm.h

@@ -6,6 +6,7 @@ struct qcom_smd_rpm;
 
 #define QCOM_SMD_RPM_ACTIVE_STATE        0
 #define QCOM_SMD_RPM_SLEEP_STATE         1
+#define QCOM_SMD_RPM_STATE_NUM		2
 
 /*
  * Constants used for addressing resources in the RPM.