boards: initial CUAV X7Pro support (not complete)

- this is booting and functional, but still missing a few things
 - still needs full PWM output, verification of all sensor rotations and IO, etc

boards/cuav/x7pro/init/rc.board_defaults

@@ -0,0 +1,38 @@
+#!/bin/sh
+#
+# CUAV X7Pro specific board defaults
+#------------------------------------------------------------------------------
+
+#
+# Bootloader upgrade
+#
+set BL_FILE /etc/extras/cuav_x7pro_bootloader.bin
+if [ -f $BL_FILE ]
+then
+	if param compare SYS_BL_UPDATE 1
+	then
+		param set SYS_BL_UPDATE 0
+		param save
+		echo "BL update..." >> $LOG_FILE
+		bl_update $BL_FILE
+		echo "BL update done" >> $LOG_FILE
+		reboot
+	fi
+fi
+unset BL_FILE
+
+if [ $AUTOCNF = yes ]
+then
+	param set BAT_V_DIV 18
+	param set BAT1_V_DIV 18
+	param set BAT2_V_DIV 18
+
+	param set BAT_A_PER_V 24
+	param set BAT1_A_PER_V 24
+	param set BAT2_A_PER_V 24
+
+	# Enable IMU thermal control
+	param set SENS_EN_THERMAL 1
+fi
+
+set LOGGER_BUF 64