wined3d: Make the mag filter lookup a separate array.

This makes it easier to make this a per texture / per adapter property.
Somewhen we should rename the remaining lookup type in the general
lookup table to wraplookup.
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index 077e456..4aeda0c 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -104,14 +104,16 @@
 
 typedef enum _WINELOOKUP {
     WINELOOKUP_WARPPARAM = 0,
-    WINELOOKUP_MAGFILTER = 1,
-    MAX_LOOKUPS          = 2
+    MAX_LOOKUPS          = 1
 } WINELOOKUP;
 
 extern int minLookup[MAX_LOOKUPS];
 extern int maxLookup[MAX_LOOKUPS];
 extern DWORD *stateLookup[MAX_LOOKUPS];
 
+typedef DWORD magLookup_t[WINED3DTEXF_ANISOTROPIC + 1];
+extern magLookup_t magLookup;
+
 typedef DWORD minMipLookup_t[WINED3DTEXF_ANISOTROPIC + 1][WINED3DTEXF_LINEAR + 1];
 extern minMipLookup_t minMipLookup;
 extern minMipLookup_t minMipLookup_noFilter;