gralloc_priv: Remove unused yaddr member

Mobile's blobs don't appear to have been compiled with this
present in their headers, and none of the Insignal sources
actually use this.

Change-Id: Ib8611f6da90ea78aa8eec451c76f56ddb32b45a4

exynos4/hal/include/gralloc_priv.h

@@ -135,7 +135,13 @@ struct private_handle_t {
     int     ion_client;
 
     /* Following members ard for YUV information */
+#ifdef USELESS_SEC_YADDR
+    /* Samsung Mobile's blobs don't appear to be using yaddr 
+     * in their header file, and none of the source uses it
+     * anywhere
+     */
     unsigned int yaddr;
+#endif
     unsigned int uoffset;
     unsigned int voffset;
 
@@ -164,7 +170,9 @@ struct private_handle_t {
     bpp(0),
     stride(0),
     ion_client(0),
+#ifdef USELESS_SEC_YADDR
     yaddr(0),
+#endif
     uoffset(0),
     voffset(0)
     {
@@ -193,7 +201,9 @@ struct private_handle_t {
     bpp(0),
     stride(0),
     ion_client(0),
+#ifdef USELESS_SEC_YADDR
     yaddr(0),
+#endif
     uoffset(0),
     voffset(0)
     {