[PATCH] kernel-side context switch code for spufs

This adds the code needed to perform a context switch from
spufs, following the recommended 76-step sequence.

Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

include/asm-powerpc/spu_csa.h

@@ -200,7 +200,6 @@ struct spu_priv2_collapsed {
 	u64 spu_chnlcnt_RW;
 	u64 spu_chnldata_RW;
 	u64 spu_cfg_RW;
-	u64 spu_pm_trace_tag_status_RW;
 	u64 spu_tag_status_query_RW;
 	u64 spu_cmd_buf1_RW;
 	u64 spu_cmd_buf2_RW;