kscan: input: fix multiple kscan inputs

The kscan input callback does not use an instance specific name, so we
can only ever have one instance of this type.

Signed-off-by: Gero Schwäricke <[email protected]>

Author: gschwaer

drivers/kscan/kscan_input.c

@@ -101,9 +101,10 @@ static const struct kscan_driver_api kscan_input_driver_api = {
 };
 
 #define KSCAN_INPUT_INIT(index) \
-	INPUT_CALLBACK_DEFINE(DEVICE_DT_GET(DT_INST_PARENT(index)),            \
-			      kscan_input_cb,                                  \
-			      (void *)DEVICE_DT_INST_GET(index));              \
+	INPUT_CALLBACK_DEFINE_NAMED(DEVICE_DT_GET(DT_INST_PARENT(index)),      \
+				    kscan_input_cb,                            \
+				    (void *)DEVICE_DT_INST_GET(index),         \
+				    kscan_input_cb_##index);                   \
 	static const struct kscan_input_config kscan_input_config_##index = {  \
 		.input_dev = DEVICE_DT_GET(DT_INST_PARENT(index)),             \
 	};                                                                     \