input: kbd_matrix: move the header to the project wide include directory

Move the input_kbd_matrix.h header out of drivers/ and into include/,
this allows external drivers to use it and doxygen to pick it up.

Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>

drivers/input/input_kbd_matrix.c

@@ -8,6 +8,7 @@
 
 #include <zephyr/device.h>
 #include <zephyr/input/input.h>
+#include <zephyr/input/input_kbd_matrix.h>
 #include <zephyr/kernel.h>
 #include <zephyr/kernel.h>
 #include <zephyr/logging/log.h>
@@ -15,8 +16,6 @@
 #define LOG_LEVEL CONFIG_INPUT_LOG_LEVEL
 LOG_MODULE_REGISTER(input_kbd_matrix);
 
-#include "input_kbd_matrix.h"
-
 #define INPUT_KBD_MATRIX_ROW_MASK UINT8_MAX
 
 void input_kbd_matrix_poll_start(const struct device *dev)

drivers/input/input_npcx_kbd.c

@@ -8,10 +8,10 @@
 #define DT_DRV_COMPAT nuvoton_npcx_kbd
 
 #include "soc_miwu.h"
-#include "input_kbd_matrix.h"
 
 #include <zephyr/drivers/clock_control.h>
 #include <zephyr/drivers/pinctrl.h>
+#include <zephyr/input/input_kbd_matrix.h>
 #include <zephyr/kernel.h>
 #include <zephyr/logging/log.h>
 #include <zephyr/sys/util.h>

include/zephyr/input/input_kbd_matrix.h

@@ -4,6 +4,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+#ifndef ZEPHYR_INCLUDE_INPUT_KBD_MATRIX_H_
+#define ZEPHYR_INCLUDE_INPUT_KBD_MATRIX_H_
+
 /**
  * @brief Keyboard Matrix API
  * @defgroup input_kbd_matrix Keyboard Matrix API
@@ -238,3 +241,5 @@ void input_kbd_matrix_poll_start(const struct device *dev);
 int input_kbd_matrix_common_init(const struct device *dev);
 
 /** @} */
+
+#endif /* ZEPHYR_INCLUDE_INPUT_KBD_MATRIX_H_ */