Don't add DriverFramework dir for NuttX

I am unable to get the nuttx build dependencies set up so that
it builds the export dir before it builds df_driver_framework.

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

src/firmware/nuttx/CMakeLists.txt

@@ -13,7 +13,7 @@ add_executable(firmware_nuttx
 set(nuttx_export_dir ${CMAKE_BINARY_DIR}/${BOARD}/NuttX/nuttx-export)
 
 set(link_libs
-	romfs apps nuttx m gcc
+	romfs apps nuttx m gcc df_driver_framework
 	)
 
 if(NOT ${BOARD} STREQUAL "sim")

src/modules/commander/PreflightCheck.cpp

@@ -197,7 +197,7 @@ static bool accelerometerCheck(int mavlink_fd, unsigned instance, bool optional,
 	if (dynamic) {
 		/* check measurement result range */
 		struct accel_report acc;
-		ret = px4_read(fd, &acc, sizeof(acc));
+		ret = h.read(&acc, sizeof(acc));
 
 		if (ret == sizeof(acc)) {
 			/* evaluate values */
@@ -219,9 +219,7 @@ static bool accelerometerCheck(int mavlink_fd, unsigned instance, bool optional,
 #endif
 
 out:
-#ifdef __PX4_NUTTX
-	px4_close(fd);
-#endif
+	DevMgr::releaseHandle(h);
 	return success;
 }