[media] tda18271: add support for QAM 7 MHz map

This standard is not properly documented, but its settings are at
the tda18271dd driver, and are somewhat obvious, as they follow
the same logic as DVB-T 7MHz.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/common/tuners/tda18271.h b/drivers/media/common/tuners/tda18271.h
index 50cfa8c..640bae4 100644
--- a/drivers/media/common/tuners/tda18271.h
+++ b/drivers/media/common/tuners/tda18271.h
@@ -53,6 +53,7 @@
 	struct tda18271_std_map_item dvbt_7;
 	struct tda18271_std_map_item dvbt_8;
 	struct tda18271_std_map_item qam_6;
+	struct tda18271_std_map_item qam_7;
 	struct tda18271_std_map_item qam_8;
 };