tests: Mark some more tests as requiring shader model 4.0.

Signed-off-by: Zebediah Figura <zfigura@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

tests/hlsl-struct-array.shader_test

@@ -1,5 +1,8 @@
 % In SM4, array elements are always aligned to the next vec4, although structs are not.
 
+[require]
+shader model >= 4.0
+
 [pixel shader]
 uniform struct
 {

tests/texture-load-typed.shader_test

@@ -1,3 +1,6 @@
+[require]
+shader model >= 4.0
+
 [pixel shader fail]
 texture<float> t;
 

tests/texture-load.shader_test

@@ -1,3 +1,6 @@
+[require]
+shader model >= 4.0
+
 [texture 0]
 size (2, 2)
 0.1 0.2 0.3 0.4     0.5 0.7 0.6 0.8