rcar_gen3: plat: Add missing platform auto-detection name

Add missing TARGET_NAME for the case where RCAR_LSI is set to AUTO,
which is platform auto-detection.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>

plat/renesas/rcar/bl2_plat_setup.c

@@ -74,6 +74,8 @@ extern void rcar_dma_init(void);
 #elif RCAR_LSI == RCAR_E3
 #define TARGET_PRODUCT			RCAR_PRODUCT_E3
 #define TARGET_NAME			"R-Car E3"
+#elif RCAR_LSI == RCAR_AUTO
+#define TARGET_NAME			"R-Car H3/M3/M3N"
 #endif
 
 #if (RCAR_LSI == RCAR_E3)