Revert "[wpa_supplicant] Cumulative patch from b8491ae5a"

This reverts commit 878cf7bcbf2d7d8f08c3d060b8c5fbfcf0743eda.

Reason for revert: git_master/sdk_phone_armv7-sdk

Change-Id: I6070fc5c1f9c20867f6dfce90e529e35578d572e
diff --git a/src/crypto/sha1-tprf.c b/src/crypto/sha1-tprf.c
index c3acf19..562510f 100644
--- a/src/crypto/sha1-tprf.c
+++ b/src/crypto/sha1-tprf.c
@@ -66,7 +66,7 @@
 		len[0] = SHA1_MAC_LEN;
 	}
 
-	forced_memzero(hash, SHA1_MAC_LEN);
+	os_memset(hash, 0, SHA1_MAC_LEN);
 
 	return 0;
 }