Android: Changed two unknown keys to be consistent with Windows and X11 mapping.

src/video/android/SDL_androidkeyboard.c

@@ -253,8 +253,8 @@ static SDL_Scancode Android_Keycodes[] = {
     SDL_SCANCODE_CALCULATOR, /* AKEYCODE_CALCULATOR */
     SDL_SCANCODE_LANG5, /* AKEYCODE_ZENKAKU_HANKAKU */
     SDL_SCANCODE_UNKNOWN, /* AKEYCODE_EISU */
-    SDL_SCANCODE_UNKNOWN, /* AKEYCODE_MUHENKAN */
-    SDL_SCANCODE_UNKNOWN, /* AKEYCODE_HENKAN */
+    SDL_SCANCODE_INTERNATIONAL5, /* AKEYCODE_MUHENKAN */
+    SDL_SCANCODE_INTERNATIONAL4, /* AKEYCODE_HENKAN */
     SDL_SCANCODE_LANG3, /* AKEYCODE_KATAKANA_HIRAGANA */
     SDL_SCANCODE_INTERNATIONAL3, /* AKEYCODE_YEN */
     SDL_SCANCODE_UNKNOWN, /* AKEYCODE_RO */