SDL: Fixed FreeBSD build (3900f)

SDL Commits
1 
From 3900fca3048c959758d191912f46a4992fbe5a86 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Wed, 8 Nov 2023 07:46:02 -0800
Subject: [PATCH] Fixed FreeBSD build

(cherry picked from commit a4c6b38fef2ff046e38072200b096c03389bfa28)
---
 src/core/freebsd/SDL_evdev_kbd_freebsd.c | 4 ++++
 src/core/linux/SDL_evdev_kbd.c           | 1 +
 2 files changed, 5 insertions(+)

diff --git a/src/core/freebsd/SDL_evdev_kbd_freebsd.c b/src/core/freebsd/SDL_evdev_kbd_freebsd.c
index 57a4697258e9..8504b80d27e8 100644
--- a/src/core/freebsd/SDL_evdev_kbd_freebsd.c
+++ b/src/core/freebsd/SDL_evdev_kbd_freebsd.c
@@ -468,6 +468,10 @@ static void k_shift(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_
     }
 }
 
+void SDL_EVDEV_kbd_set_muted(SDL_EVDEV_keyboard_state *state, SDL_bool muted)
+{
+}
+
 void SDL_EVDEV_kbd_keycode(SDL_EVDEV_keyboard_state *kbd, unsigned int keycode, int down)
 {
     keymap_t key_map;
diff --git a/src/core/linux/SDL_evdev_kbd.c b/src/core/linux/SDL_evdev_kbd.c
index fe0cac03e2af..73d14848c15a 100644
--- a/src/core/linux/SDL_evdev_kbd.c
+++ b/src/core/linux/SDL_evdev_kbd.c
@@ -830,6 +830,7 @@ SDL_EVDEV_keyboard_state *SDL_EVDEV_kbd_init(void)
 void SDL_EVDEV_kbd_set_muted(SDL_EVDEV_keyboard_state *state, SDL_bool muted)
 {
 }
+
 void SDL_EVDEV_kbd_keycode(SDL_EVDEV_keyboard_state *state, unsigned int keycode, int down)
 {
 }