frsky telem: reduce stack, fix missing header

src/drivers/frsky_telemetry/frsky_data.c

@@ -53,6 +53,8 @@
 #include <uORB/topics/vehicle_global_position.h>
 #include <uORB/topics/vehicle_status.h>
 
+#include <drivers/drv_hrt.h>
+
 /* FrSky sensor hub data IDs */
 #define FRSKY_ID_GPS_ALT_BP     0x01
 #define FRSKY_ID_TEMP1          0x02

src/drivers/frsky_telemetry/frsky_telemetry.c

@@ -222,7 +222,7 @@ int frsky_telemetry_main(int argc, char *argv[])
 		frsky_task = task_spawn_cmd("frsky_telemetry",
 					  SCHED_DEFAULT,
 					  SCHED_PRIORITY_DEFAULT,
-					  2048,
+					  2000,
 					  frsky_telemetry_thread_main,
 					  (const char **)argv);
 

src/drivers/frsky_telemetry/module.mk

@@ -39,3 +39,5 @@ MODULE_COMMAND	= frsky_telemetry
 
 SRCS		= frsky_data.c \
               frsky_telemetry.c
+
+MODULE_STACKSIZE = 1200