FIX: fix the following issues

1. fix the get fc serial number error on M30/M30T
2. fix the identity zenmuse L1 camera failed
3. fix the cpu loading high issue when not used media download apis
4. fix sample cxx compile failed when libusb is not installed

Signed-off-by: DJI-Martin <DJI-Martin@dji.com>

psdk_lib/include/dji_flight_controller.h

@@ -254,7 +254,7 @@ typedef struct {
 } T_DjiFlightControllerHomeLocation; // pack(1)
 
 typedef struct {
-    char serialNum[16];
+    char serialNum[32];
 } T_DjiFlightControllerGeneralInfo;
 #pragma pack()
 

psdk_lib/include/dji_version.h

@@ -37,7 +37,7 @@ extern "C" {
 #define DJI_VERSION_MINOR     2 /*!< DJI SDK minor version num, when add functionality in a backwards compatible manner changes. Range from 0 to 99. */
 #define DJI_VERSION_MODIFY    0 /*!< DJI SDK modify version num, when have backwards compatible bug fixes changes. Range from 0 to 99. */
 #define DJI_VERSION_BETA      0 /*!< DJI SDK version beta info, release version will be 0, when beta version release changes. Range from 0 to 255. */
-#define DJI_VERSION_BUILD     1540 /*!< DJI SDK version build info, when jenkins trigger build changes. Range from 0 to 65535. */
+#define DJI_VERSION_BUILD     1558 /*!< DJI SDK version build info, when jenkins trigger build changes. Range from 0 to 65535. */
 
 /* Exported types ------------------------------------------------------------*/
 

samples/sample_c++/platform/linux/manifold2/hal/hal_usb_bulk.h

@@ -38,9 +38,13 @@
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
+#include "dji_platform.h"
+
+#ifdef LIBUSB_INSTALLED
+
 #include <libusb-1.0/libusb.h>
 
-#include "dji_platform.h"
+#endif
 
 #ifdef __cplusplus
 extern "C" {