board/BuR/common: remove interface Label from summary screen

This interface names may vary over different products, to consider this
fact we replace the interface label "IF1" and "IF2" on the summary
screen with some more generic wording "MAC1" and "MAC2".

Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
diff --git a/board/BuR/common/common.c b/board/BuR/common/common.c
index e1ac6c4..1e14a90 100644
--- a/board/BuR/common/common.c
+++ b/board/BuR/common/common.c
@@ -176,8 +176,8 @@
 {
 	br_summaryscreen_printenv(" - B&R -", "br_orderno", 0, "-\n");
 	br_summaryscreen_printenv(" Serial/Rev :", "br_serial", 0, "\n");
-	br_summaryscreen_printenv(" MAC (IF1)  :", "br_mac1", "ethaddr", "\n");
-	br_summaryscreen_printenv(" MAC (IF2)  :", "br_mac2", 0, "\n");
+	br_summaryscreen_printenv(" MAC1       :", "br_mac1", "ethaddr", "\n");
+	br_summaryscreen_printenv(" MAC2       :", "br_mac2", 0, "\n");
 	lcd_puts(" Bootloader : " PLAIN_VERSION "\n");
 	lcd_puts("\n");
 }