panfrost: Add missing static inline annotation

Quiets -Wunused-function

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Italo Nicola <italonicola@collabora.com>
Acked-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24428>

src/panfrost/lib/genxml/decode.h

@@ -112,7 +112,7 @@ pandecode_make_indent(void)
       fprintf(pandecode_dump_stream, "  ");
 }
 
-static void PRINTFLIKE(1, 2) pandecode_log(const char *format, ...)
+static inline void PRINTFLIKE(1, 2) pandecode_log(const char *format, ...)
 {
    va_list ap;
 
@@ -122,7 +122,7 @@ static void PRINTFLIKE(1, 2) pandecode_log(const char *format, ...)
    va_end(ap);
 }
 
-static void
+static inline void
 pandecode_log_cont(const char *format, ...)
 {
    va_list ap;