dmaengine: PL08x: constify channel names and bus_id strings

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index 9494990..775efef 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -237,7 +237,7 @@
 	struct pl08x_phy_chan *phychan;
 	int phychan_hold;
 	struct tasklet_struct tasklet;
-	char *name;
+	const char *name;
 	const struct pl08x_channel_data *cd;
 	dma_addr_t src_addr;
 	dma_addr_t dst_addr;