wireless-regdb: Update regulatory rules for Brazil (BR)

The rules for Brazil in wireless-regdb have no comment indicating where
they came from, and haven't been updated in a long time. There have been
some changes to the legislation since then, including the addition of
the 6 GHz and 60 GHz ranges.

Signed-off-by: Cesar Eduardo Barros <cesarb@cesarb.eti.br>
Signed-off-by: Seth Forshee <sforshee@kernel.org>
diff --git a/db.txt b/db.txt
index 07cdf4a..132f6de 100644
--- a/db.txt
+++ b/db.txt
@@ -279,12 +279,21 @@
 	(5250 - 5330 @ 80), (30), DFS
 	(5735 - 5835 @ 80), (30)
 
+# Source:
+# https://www.gov.br/anatel/pt-br/regulado/radiofrequencia/radiacao-restrita
+# https://informacoes.anatel.gov.br/legislacao/resolucoes/2017/936-resolucao-680
+# https://informacoes.anatel.gov.br/legislacao/atos-de-certificacao-de-produtos/2017/1139-ato-14448
 country BR: DFS-FCC
-	(2402 - 2482 @ 40), (20)
-	(5170 - 5250 @ 80), (17), AUTO-BW
-	(5250 - 5330 @ 80), (24), DFS, AUTO-BW
-	(5490 - 5730 @ 160), (24), DFS
-	(5735 - 5835 @ 80), (30)
+	(2400 - 2483.5 @ 40), (30)
+	# The next three ranges have been reduced by 3dB, could be increased
+	# to 30dBm if TPC is implemented.
+	(5150 - 5250 @ 80), (27), NO-OUTDOOR, AUTO-BW
+	(5250 - 5350 @ 80), (27), NO-OUTDOOR, DFS, AUTO-BW
+	(5470 - 5725 @ 160), (27), DFS, AUTO-BW
+	(5725 - 5850 @ 80), (30), AUTO-BW
+	(5925 - 7125 @ 320), (12), NO-OUTDOOR, NO-IR
+	# EIRP=40dBm (43dBm peak)
+	(57000 - 71000 @ 2160), (40)
 
 country BS: DFS-FCC
 	(2402 - 2482 @ 40), (20)