drm/panic: Spelling s/formater/formatter/

Fix a misspelling of "formatter".

Fixes: 54034beb ("drm/panic: Add a kmsg panic screen")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/5a11f8caf8759aaa22d421034d3047368e9d5f33.1718305355.git.geert+renesas@glider.be

drivers/gpu/drm/Kconfig

@@ -138,7 +138,7 @@ config DRM_PANIC_DEBUG
 	  If in doubt, say "N".
 
 config DRM_PANIC_SCREEN
-	string "Panic screen formater"
+	string "Panic screen formatter"
 	default "user"
 	depends on DRM_PANIC
 	help