Fix wrappers on HAL/STM32F1 .cpp files (#19581)

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Marlin/src/HAL/STM32F1/onboard_sd.cpp

@@ -11,6 +11,8 @@
  * Redistributions of source code must retain the above copyright notice.
  */
 
+#ifdef __STM32F1__
+
 #include "../../inc/MarlinConfig.h"
 
 #if SD_CONNECTION_IS(ONBOARD)
@@ -553,3 +555,4 @@ DRESULT disk_read (
 #endif // _DISKIO_IOCTL
 
 #endif // SD_CONNECTION_IS(ONBOARD)
+#endif // __STM32F1__