Add log messages to the certificate callback path.

Logs are meant to test 2 theories regarding the
SIGSEGV in the attached bug:

 1. Failure is happening somewhere in the middle
    of the call path from tls_openssl to AIDL.
 2. sm struct becomes stale before the callback is
    used.

Bug: 275293332
Test: Connect to WPA-Enterprise network and verify logs.
Change-Id: I7b654d2a63f7f453f05b586f84c42702ac899d1e
diff --git a/wpa_supplicant/aidl/aidl.cpp b/wpa_supplicant/aidl/aidl.cpp
index 5d578dd..b4518bf 100644
--- a/wpa_supplicant/aidl/aidl.cpp
+++ b/wpa_supplicant/aidl/aidl.cpp
@@ -1069,5 +1069,7 @@
 	if (!aidl_manager)
 		return -1;
 
+	wpa_printf(MSG_INFO, "Requesting certificate from framework");
+
 	return aidl_manager->getCertificate(alias, value);
 }