i965: Move BATCH_SZ define into intel_batchbuffer.c.

It's only used in one file.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

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

@@ -449,7 +449,6 @@ struct intel_batchbuffer {
    uint32_t *map_next;
    uint32_t *map;
    uint32_t *cpu_map;
-#define BATCH_SZ (8192*sizeof(uint32_t))
 
    uint32_t state_batch_offset;
    enum brw_gpu_ring ring;

src/mesa/drivers/dri/i965/intel_batchbuffer.c

@@ -40,6 +40,8 @@
 
 #define FILE_DEBUG_FLAG DEBUG_BUFMGR
 
+#define BATCH_SZ (8192*sizeof(uint32_t))
+
 static void
 intel_batchbuffer_reset(struct intel_batchbuffer *batch,
                         struct brw_bufmgr *bufmgr,