fix regression in tcsetattr on all mips archs

revert commit 8c316e9e49d37ad92c2e7493e16166a2afca419f. it was wrong
and does not match how the kernel API works.
diff --git a/arch/mips/bits/termios.h b/arch/mips/bits/termios.h
index f559f76..6a1205d 100644
--- a/arch/mips/bits/termios.h
+++ b/arch/mips/bits/termios.h
@@ -141,9 +141,9 @@
 #define TCOFLUSH  1
 #define TCIOFLUSH 2
 
-#define TCSANOW 0x540e
-#define TCSADRAIN 0x540f
-#define TCSAFLUSH 0x5410
+#define TCSANOW   0
+#define TCSADRAIN 1
+#define TCSAFLUSH 2
 
 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 #define EXTA    0000016
diff --git a/arch/mips64/bits/termios.h b/arch/mips64/bits/termios.h
index f559f76..6a1205d 100644
--- a/arch/mips64/bits/termios.h
+++ b/arch/mips64/bits/termios.h
@@ -141,9 +141,9 @@
 #define TCOFLUSH  1
 #define TCIOFLUSH 2
 
-#define TCSANOW 0x540e
-#define TCSADRAIN 0x540f
-#define TCSAFLUSH 0x5410
+#define TCSANOW   0
+#define TCSADRAIN 1
+#define TCSAFLUSH 2
 
 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 #define EXTA    0000016
diff --git a/arch/mipsn32/bits/termios.h b/arch/mipsn32/bits/termios.h
index f559f76..6a1205d 100644
--- a/arch/mipsn32/bits/termios.h
+++ b/arch/mipsn32/bits/termios.h
@@ -141,9 +141,9 @@
 #define TCOFLUSH  1
 #define TCIOFLUSH 2
 
-#define TCSANOW 0x540e
-#define TCSADRAIN 0x540f
-#define TCSAFLUSH 0x5410
+#define TCSANOW   0
+#define TCSADRAIN 1
+#define TCSAFLUSH 2
 
 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 #define EXTA    0000016
diff --git a/src/passwd/nscd_query.c b/src/passwd/nscd_query.c
index d38e371..1897edc 100644
--- a/src/passwd/nscd_query.c
+++ b/src/passwd/nscd_query.c
@@ -40,7 +40,7 @@
 	buf[0] = NSCDVERSION;
 
 	fd = socket(PF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0);
-	if (fd < 0) return NULL;
+	if (fd < 0 && errno != EAFNOSUPPORT) return NULL;
 
 	if(!(f = fdopen(fd, "r"))) {
 		close(fd);