dmaengine: imx-sdma: Allow imx8m for imx7 FW revs

The revision of the imx-sdma IP that is in the i.MX8M series is the
same is that as that in the i.MX7 series but the imx7d MODULE_FIRMWARE
directive is wrapped in a condiditional which means it's not defined
when built for aarch64 SOC_IMX8M platforms and hence you get the
following errors when the driver loads on imx8m devices:

imx-sdma 302c0000.dma-controller: Direct firmware load for imx/sdma/sdma-imx7d.bin failed with error -2
imx-sdma 302c0000.dma-controller: external firmware not found, using ROM firmware

Add the SOC_IMX8M into the check so the firmware can load on i.MX8.

Fixes: 1474d48 ("arm64: dts: imx8mq: Add SDMA nodes")
Fixes: 941acd5 ("dmaengine: imx-sdma: Only check ratio on parts that support 1:1")
Signed-off-by: Peter Robinson <[email protected]>
Cc: [email protected]   # v5.2+
Reviewed-by: Fabio Estevam <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: nullr0ute

drivers/dma/imx-sdma.c

@@ -2346,7 +2346,7 @@ MODULE_DESCRIPTION("i.MX SDMA driver");
 #if IS_ENABLED(CONFIG_SOC_IMX6Q)
 MODULE_FIRMWARE("imx/sdma/sdma-imx6q.bin");
 #endif
-#if IS_ENABLED(CONFIG_SOC_IMX7D)
+#if IS_ENABLED(CONFIG_SOC_IMX7D) || IS_ENABLED(CONFIG_SOC_IMX8M)
 MODULE_FIRMWARE("imx/sdma/sdma-imx7d.bin");
 #endif
 MODULE_LICENSE("GPL");