main: Fix MaxUniformComponents for geometry shaders.

For both vertex and fragment shaders we default MaxUniformComponents
to 4 * MAX_UNIFORMS.  It makes sense to do this for geometry shaders
too; if back-ends have different limits they can override them as
necessary.

Fixes piglit test:
spec/glsl-1.50/built-in constants/gl_MaxGeometryUniformComponents

Cc: "10.0" <mesa-stable@lists.freedesktop.org>

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>

src/mesa/main/context.c

@@ -494,7 +494,7 @@ init_program_limits(struct gl_context *ctx, GLenum type,
       prog->MaxParameters = MAX_VERTEX_PROGRAM_PARAMS;
       prog->MaxAttribs = MAX_VERTEX_GENERIC_ATTRIBS;
       prog->MaxAddressRegs = MAX_VERTEX_PROGRAM_ADDRESS_REGS;
-      prog->MaxUniformComponents = MAX_GEOMETRY_UNIFORM_COMPONENTS;
+      prog->MaxUniformComponents = 4 * MAX_UNIFORMS;
       prog->MaxInputComponents = 16 * 4; /* old limit not to break tnl and swrast */
       prog->MaxOutputComponents = 16 * 4; /* old limit not to break tnl and swrast */
       break;