AP_HAL: ERLEBOARD legacy support

This config referred to the legacy Erle-Board
https://erlerobotics.com/blog/product/erle-board/
The configuration is preserved to support the
existing boards.

libraries/AP_HAL/AP_HAL_Boards.h

@@ -27,7 +27,7 @@
    HAL Linux sub-types, starting at 1000
  */
 #define HAL_BOARD_SUBTYPE_LINUX_NONE     1000
-#define HAL_BOARD_SUBTYPE_LINUX_ERLE     1001
+#define HAL_BOARD_SUBTYPE_LINUX_ERLEBOARD 1001
 #define HAL_BOARD_SUBTYPE_LINUX_PXF      1002
 #define HAL_BOARD_SUBTYPE_LINUX_NAVIO    1003
 #define HAL_BOARD_SUBTYPE_LINUX_ZYNQ     1004
@@ -207,7 +207,7 @@
 #define HAL_INS_DEFAULT HAL_INS_HIL
 #define HAL_BARO_DEFAULT HAL_BARO_HIL
 #define HAL_COMPASS_DEFAULT HAL_COMPASS_HIL
-#elif CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_PXF || CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_ERLE
+#elif CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_PXF || CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_ERLEBOARD
 #define HAL_BOARD_LOG_DIRECTORY "/var/APM/logs"
 #define HAL_BOARD_TERRAIN_DIRECTORY "/var/APM/terrain"
 #define HAL_INS_DEFAULT HAL_INS_MPU9250