glsl: Remove bogus "OUPTUT" token

This is never used. There is another token "OUTPUT" which the lexer can
generate, though. This has been around since the dawn of time; is most
likely a typo.

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>

src/glsl/glsl_parser.yy

@@ -179,7 +179,7 @@ static bool match_layout_qualifier(const char *s1, const char *s2,
     */
 %token ASM CLASS UNION ENUM TYPEDEF TEMPLATE THIS PACKED_TOK GOTO
 %token INLINE_TOK NOINLINE PUBLIC_TOK STATIC EXTERN EXTERNAL
-%token LONG_TOK SHORT_TOK DOUBLE_TOK HALF FIXED_TOK UNSIGNED INPUT_TOK OUPTUT
+%token LONG_TOK SHORT_TOK DOUBLE_TOK HALF FIXED_TOK UNSIGNED INPUT_TOK
 %token HVEC2 HVEC3 HVEC4 DVEC2 DVEC3 DVEC4 FVEC2 FVEC3 FVEC4
 %token SAMPLER3DRECT
 %token SIZEOF CAST NAMESPACE USING