powerpc/oprofile: fix spelling mistake "contex" -> "context"

There is a spelling mistake in a pr_debug message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200804174316.402425-1-colin.king@canonical.com

arch/powerpc/oprofile/cell/spu_task_sync.c

@@ -572,7 +572,7 @@ void spu_sync_buffer(int spu_num, unsigned int *samples,
 		 * samples are recorded.
 		 * No big deal -- so we just drop a few samples.
 		 */
-		pr_debug("SPU_PROF: No cached SPU contex "
+		pr_debug("SPU_PROF: No cached SPU context "
 			  "for SPU #%d. Dropping samples.\n", spu_num);
 		goto out;
 	}