add RP500 equalizer settings

gdigi.h

@@ -243,6 +243,15 @@ enum {
 #define EQ_MID_HZ 3206
 #define EQ_TREBLE 3205
 #define EQ_TREBLE_HZ 3211
+#define EQ_LOW_LEVEL 3203
+#define EQ_MID_LEVEL 3204
+#define EQ_HIGH_LEVEL 3205
+#define EQ_LOW_FREQ 3213
+#define EQ_MID_FREQ 3214
+#define EQ_HIGH_FREQ 3215
+#define EQ_LOW_BANDWIDTH 3216
+#define EQ_MID_BANDWIDTH 3217
+#define EQ_HIGH_BANDWIDTH 3218
 
 enum {
   NOISEGATE_GATE = 768,