fix regression in tcsetattr on all mips archs

revert commit 8c316e9e. it was wrong
and does not match how the kernel API works.

arch/mips/bits/termios.h

@@ -141,9 +141,9 @@ struct termios {
 #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

arch/mips64/bits/termios.h

@@ -141,9 +141,9 @@ struct termios {
 #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

arch/mipsn32/bits/termios.h

@@ -141,9 +141,9 @@ struct termios {
 #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

src/passwd/nscd_query.c

@@ -40,7 +40,7 @@ retry:
 	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);