Fix multiple definition errors for trackball "boards" with no keys (#16350)

keyboards/handwired/aball/aball.c

@@ -15,4 +15,3 @@
  */
 
 #include "aball.h"
-const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = { };

keyboards/handwired/aball/aball.h

@@ -18,12 +18,4 @@
 
 #include "quantum.h"
 
-/* This is a shortcut to help you visually see your layout.
- *
- * The first section contains all of the arguments representing the physical
- * layout of the board and position of the keys.
- *
- * The second converts the arguments into a two-dimensional array which
- * represents the switch matrix.
- */
-#define LAYOUT(k00) {{ KC_NO }}
+#define LAYOUT(k00) {{ k00 }}

keyboards/handwired/aball/keymaps/default/keymap.c

@@ -15,4 +15,5 @@
  */
 #include QMK_KEYBOARD_H
 
-
+// Dummy
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {{ KC_NO }};

keyboards/ploopyco/trackball_nano/keymaps/default/keymap.c

@@ -20,4 +20,5 @@
 
 // safe range starts at `PLOOPY_SAFE_RANGE` instead.
 
-// placeholder file so it will compile
+// Dummy
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {{ KC_NO }};

keyboards/ploopyco/trackball_nano/keymaps/maddie/keymap.c

@@ -24,6 +24,9 @@ uint8_t lock_state = 0;
 int8_t  delta_x        = 0;
 int8_t  delta_y        = 0;
 
+// Dummy
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {{ KC_NO }};
+
 void process_mouse_user(report_mouse_t *mouse_report, int8_t x, int8_t y) {
     if (scroll_enabled) {
         delta_x += x;

keyboards/ploopyco/trackball_nano/trackball_nano.c

@@ -48,8 +48,6 @@
 #    define PLOOPY_DPI_DEFAULT 2
 #endif
 
-const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = { };
-
 keyboard_config_t keyboard_config;
 uint16_t          dpi_array[] = PLOOPY_DPI_OPTIONS;
 #define DPI_OPTION_SIZE (sizeof(dpi_array) / sizeof(uint16_t))

keyboards/ploopyco/trackball_nano/trackball_nano.h

@@ -21,7 +21,7 @@
 
 #include "quantum.h"
 
-#define LAYOUT(k00) {{ KC_NO }}
+#define LAYOUT(k00) {{ k00 }}
 
 typedef union {
   uint32_t raw;