mesa: Use string literals for format strings

Android build settings require format strings to be string literals.

Fixes: d2906293c43 "mesa: EXT_dsa add selectorless matrix stack functions"
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110833
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
1 file changed