i965: Make brw_cache_item structure private to brw_program_cache.c.

struct brw_cache_item is an implementation detail of the program cache.
We don't need to make those internals available to the entire driver.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eduardo Lima Mitev <elima@igalia.com>

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

@@ -453,25 +453,6 @@ struct brw_ff_gs_prog_data {
  */
 #define SHADER_TIME_STRIDE 64
 
-struct brw_cache_item {
-   /**
-    * Effectively part of the key, cache_id identifies what kind of state
-    * buffer is involved, and also which dirty flag should set.
-    */
-   enum brw_cache_id cache_id;
-   /** 32-bit hash of the key data */
-   GLuint hash;
-   GLuint key_size;		/* for variable-sized keys */
-   GLuint aux_size;
-   const void *key;
-
-   uint32_t offset;
-   uint32_t size;
-
-   struct brw_cache_item *next;
-};
-
-
 struct brw_cache {
    struct brw_context *brw;
 

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

@@ -55,6 +55,27 @@
 
 #define FILE_DEBUG_FLAG DEBUG_STATE
 
+struct brw_cache_item {
+   /**
+    * Effectively part of the key, cache_id identifies what kind of state
+    * buffer is involved, and also which dirty flag should set.
+    */
+   enum brw_cache_id cache_id;
+
+   /** 32-bit hash of the key data */
+   GLuint hash;
+
+   /** for variable-sized keys */
+   GLuint key_size;
+   GLuint aux_size;
+   const void *key;
+
+   uint32_t offset;
+   uint32_t size;
+
+   struct brw_cache_item *next;
+};
+
 static unsigned
 get_program_string_id(enum brw_cache_id cache_id, const void *key)
 {