i965: Convert wrap mode #defines to an enum.

This makes it easy to tell that they're grouped together, and also
improves gdb printing.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>

src/mesa/drivers/dri/i965/brw_defines.h

@@ -610,13 +610,15 @@
 #define HSW_SCS_BLUE                     6
 #define HSW_SCS_ALPHA                    7
 
-#define BRW_TEXCOORDMODE_WRAP            0
-#define BRW_TEXCOORDMODE_MIRROR          1
-#define BRW_TEXCOORDMODE_CLAMP           2
-#define BRW_TEXCOORDMODE_CUBE            3
-#define BRW_TEXCOORDMODE_CLAMP_BORDER    4
-#define BRW_TEXCOORDMODE_MIRROR_ONCE     5
-#define GEN8_TEXCOORDMODE_HALF_BORDER    6
+enum brw_wrap_mode {
+   BRW_TEXCOORDMODE_WRAP         = 0,
+   BRW_TEXCOORDMODE_MIRROR       = 1,
+   BRW_TEXCOORDMODE_CLAMP        = 2,
+   BRW_TEXCOORDMODE_CUBE         = 3,
+   BRW_TEXCOORDMODE_CLAMP_BORDER = 4,
+   BRW_TEXCOORDMODE_MIRROR_ONCE  = 5,
+   GEN8_TEXCOORDMODE_HALF_BORDER = 6,
+};
 
 #define BRW_THREAD_PRIORITY_NORMAL   0
 #define BRW_THREAD_PRIORITY_HIGH     1