Edit config paramter as per logging changes in libnfc-nci

Sub-system level tracing has been removed. Libnfc-nci now depends on a
single level level. If APPL_TRACE_LEVEL is 0 then debug log is disabled,
for any other value debug logs are enabled.

Test: Change config and check logcat.
Change-Id: I123e4d858d4f61471e828770ce1d27ea873c12ac
diff --git a/nfc/libnfc-brcm.conf b/nfc/libnfc-brcm.conf
index 05cb160..a7444c3 100644
--- a/nfc/libnfc-brcm.conf
+++ b/nfc/libnfc-brcm.conf
@@ -2,7 +2,7 @@
 
 ###############################################################################
 # Application options
-APPL_TRACE_LEVEL=0x01
+APPL_TRACE_LEVEL=0x00
 PROTOCOL_TRACE_LEVEL=0x00000000
 
 ###############################################################################