greybus: sdio: add field to get_caps response

Frequency maximum and minimum are needed to complete the configuration
of the controller. Add them to get_caps response operation.
Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/greybus_protocols.h

@@ -1002,6 +1002,8 @@ struct gb_sdio_get_caps_response {
 	__le32 ocr;
 	__le16 max_blk_count;
 	__le16 max_blk_size;
+	__le32 f_min;
+	__le32 f_max;
 } __packed;
 
 /* set ios request: response has no payload */

drivers/staging/greybus/sdio.c

@@ -122,6 +122,10 @@ static int gb_sdio_get_caps(struct gb_sdio_host *host)
 	mmc->ocr_avail_sd = mmc->ocr_avail;
 	mmc->ocr_avail_mmc = mmc->ocr_avail;
 
+	/* get frequency range values */
+	mmc->f_min = le32_to_cpu(response.f_min);
+	mmc->f_max = le32_to_cpu(response.f_max);
+
 	return 0;
 }