board: phytec: common: phytec_som_detection: Add phytec_get_som_type

Add a function that gets the som_type from the EEPROM.
Add an enum for the som_type.

Signed-off-by: Benjamin Hahn <B.Hahn@phytec.de>
diff --git a/board/phytec/common/phytec_som_detection.c b/board/phytec/common/phytec_som_detection.c
index c73bf97..f9607b0 100644
--- a/board/phytec/common/phytec_som_detection.c
+++ b/board/phytec/common/phytec_som_detection.c
@@ -203,6 +203,16 @@
 	return api2->pcb_rev;
 }
 
+u8 __maybe_unused phytec_get_som_type(struct phytec_eeprom_data *data)
+{
+	if (!data)
+		data = &eeprom_data;
+	if (data->api_rev < PHYTEC_API_REV2)
+		return PHYTEC_EEPROM_INVAL;
+
+	return data->data.data_api2.som_type;
+}
+
 #else
 
 inline int phytec_eeprom_data_setup(struct phytec_eeprom_data *data,
diff --git a/board/phytec/common/phytec_som_detection.h b/board/phytec/common/phytec_som_detection.h
index 1100924..7edbfa3 100644
--- a/board/phytec/common/phytec_som_detection.h
+++ b/board/phytec/common/phytec_som_detection.h
@@ -19,6 +19,13 @@
 	PHYTEC_API_REV2,
 };
 
+enum phytec_som_type_str {
+	SOM_TYPE_PCM = 0,
+	SOM_TYPE_PCL,
+	SOM_TYPE_KSM,
+	SOM_TYPE_KSP,
+};
+
 static const char * const phytec_som_type_str[] = {
 	"PCM",
 	"PCL",
@@ -67,5 +74,6 @@
 
 char * __maybe_unused phytec_get_opt(struct phytec_eeprom_data *data);
 u8 __maybe_unused phytec_get_rev(struct phytec_eeprom_data *data);
+u8 __maybe_unused phytec_get_som_type(struct phytec_eeprom_data *data);
 
 #endif /* _PHYTEC_SOM_DETECTION_H */