dmaengine i.MX SDMA: Fix firmware loading

When loading the microcode to the SDMA engine we have to use
the ram_code_start_addr found in the firmware image. The copy
in the sdma engine is not initialized correctly. This is broken
since:
5b28aa31 dmaengine i.MX SDMA: Allow to run without firmware
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

drivers/dma/imx-sdma.c

@@ -1135,7 +1135,7 @@ static int __init sdma_get_firmware(struct sdma_engine *sdma,
 	/* download the RAM image for SDMA */
 	sdma_load_script(sdma, ram_code,
 			header->ram_code_size,
-			sdma->script_addrs->ram_code_start_addr);
+			addr->ram_code_start_addr);
 	clk_disable(sdma->clk);
 
 	sdma_add_scripts(sdma, addr);