ArduCopter: add config_motors.h with MOT_n to CH_m mapping

* APM1 values are not valid, but hopefully APM2 will stay that way?

ArduCopter/config_motors.h

@@ -0,0 +1,47 @@
+
+#ifndef __ARDUCOPTER_CONFIG_MOTORS_H__
+#define __ARDUCOPTER_CONFIG_MOTORS_H__
+
+//////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////
+//
+// WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+//
+//  DO NOT EDIT this file to adjust your configuration.  Create your own
+//  APM_Config.h and use APM_Config.h.example as a reference.
+//
+// WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+///
+//////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////
+//
+
+#include "config.h"
+
+//
+//
+// Output CH mapping for ArduCopter motor channels
+//
+//
+#if CONFIG_APM_HARDWARE == APM_HARDWARE_APM2
+# define MOT_1 CH_1
+# define MOT_2 CH_2
+# define MOT_3 CH_3
+# define MOT_4 CH_4
+# define MOT_5 CH_5
+# define MOT_6 CH_6
+# define MOT_7 CH_7
+# define MOT_8 CH_8
+#elif CONFIG_APM_HARDWARE == APM_HARDWARE_APM1
+# define MOT_1 CH_1
+# define MOT_2 CH_2
+# define MOT_3 CH_3
+# define MOT_4 CH_4
+/* XXX Placeholders: These need to be changed XXX */
+# define MOT_5 CH_5
+# define MOT_6 CH_6
+# define MOT_7 CH_7
+# define MOT_8 CH_8
+#endif
+
+#endif // __ARDUCOPTER_CONFIG_MOTORS_H__