dmaengine i.MX SDMA: initialize on module_init

The firmware framework gets initialized during fs_initcall time, so
we are not allowed to call request_firmware earlier.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 13d6447..d0602dd 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1385,7 +1385,7 @@
 {
 	return platform_driver_probe(&sdma_driver, sdma_probe);
 }
-subsys_initcall(sdma_module_init);
+module_init(sdma_module_init);
 
 MODULE_AUTHOR("Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>");
 MODULE_DESCRIPTION("i.MX SDMA driver");