style(usb): indent preprocessor guard per astyle

The #error directive under #ifndef USE_HAL_PCD_MODULE needs one space
of preprocessor indentation to satisfy the repository astyle check.

Co-Authored-By: Claude <noreply@anthropic.com>

Author: cumin777

libraries/USBDevice/src/usbd_confv2.c

@@ -16,7 +16,7 @@
 #include "usbd_ep_conf.h"
 
 #ifndef USE_HAL_PCD_MODULE
-#error "USE_HAL_PCD_MODULE is required"
+ #error "USE_HAL_PCD_MODULE is required"
 #endif
 
 static hal_pcd_handle_t g_hpcd;