ARM: mxc: make imx_dma_is_general_purpose more generic for sdma

sdma device names vary for different SoC. So we just check
whether it includes "sdma" substring.

Signed-off-by: Richard Zhao <richard.zhao@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/plat-mxc/include/mach/dma.h b/arch/arm/plat-mxc/include/mach/dma.h
index 233d0a5..1b90803 100644
--- a/arch/arm/plat-mxc/include/mach/dma.h
+++ b/arch/arm/plat-mxc/include/mach/dma.h
@@ -60,8 +60,7 @@
 
 static inline int imx_dma_is_general_purpose(struct dma_chan *chan)
 {
-	return !strcmp(dev_name(chan->device->dev), "imx31-sdma") ||
-		!strcmp(dev_name(chan->device->dev), "imx35-sdma") ||
+	return strstr(dev_name(chan->device->dev), "sdma") ||
 		!strcmp(dev_name(chan->device->dev), "imx-dma");
 }