move time64 socket options from arch bits to top-level sys/socket.h

now that all 32-bit archs have 64-bit time types, the values for the
time-related socket option macros can be treated as universal for
32-bit archs. the sys/socket.h mechanism for this predates
arch/generic and is instead in the top-level header.

x32, which does not use the new time64 values of the macros, already
has its own overrides, so this commit does not affect it.

arch/arm/bits/socket.h

-#define SO_TIMESTAMP    63
-#define SO_TIMESTAMPNS  64
-#define SO_TIMESTAMPING 65
-#define SO_RCVTIMEO     66
-#define SO_SNDTIMEO     67

arch/i386/bits/socket.h

-#define SO_TIMESTAMP    63
-#define SO_TIMESTAMPNS  64
-#define SO_TIMESTAMPING 65
-#define SO_RCVTIMEO     66
-#define SO_SNDTIMEO     67

arch/m68k/bits/socket.h

-#define SO_TIMESTAMP    63
-#define SO_TIMESTAMPNS  64
-#define SO_TIMESTAMPING 65
-#define SO_RCVTIMEO     66
-#define SO_SNDTIMEO     67

arch/microblaze/bits/socket.h

-#define SO_TIMESTAMP    63
-#define SO_TIMESTAMPNS  64
-#define SO_TIMESTAMPING 65
-#define SO_RCVTIMEO     66
-#define SO_SNDTIMEO     67

arch/mips/bits/socket.h

@@ -21,11 +21,6 @@
 #define SO_ACCEPTCONN   0x1009
 #define SO_PROTOCOL     0x1028
 #define SO_DOMAIN       0x1029
-#define SO_TIMESTAMP    63
-#define SO_TIMESTAMPNS  64
-#define SO_TIMESTAMPING 65
-#define SO_RCVTIMEO     66
-#define SO_SNDTIMEO     67
 
 #define SO_NO_CHECK     11
 #define SO_PRIORITY     12

arch/mipsn32/bits/socket.h

@@ -21,11 +21,6 @@
 #define SO_ACCEPTCONN   0x1009
 #define SO_PROTOCOL     0x1028
 #define SO_DOMAIN       0x1029
-#define SO_TIMESTAMP    63
-#define SO_TIMESTAMPNS  64
-#define SO_TIMESTAMPING 65
-#define SO_RCVTIMEO     66
-#define SO_SNDTIMEO     67
 
 #define SO_NO_CHECK     11
 #define SO_PRIORITY     12

arch/or1k/bits/socket.h

-#define SO_TIMESTAMP    63
-#define SO_TIMESTAMPNS  64
-#define SO_TIMESTAMPING 65
-#define SO_RCVTIMEO     66
-#define SO_SNDTIMEO     67

arch/powerpc/bits/socket.h

@@ -23,8 +23,3 @@
 #define SO_RCVBUFFORCE  33
 #define SO_PROTOCOL     38
 #define SO_DOMAIN       39
-#define SO_TIMESTAMP    63
-#define SO_TIMESTAMPNS  64
-#define SO_TIMESTAMPING 65
-#define SO_RCVTIMEO     66
-#define SO_SNDTIMEO     67

arch/sh/bits/socket.h

-#define SO_TIMESTAMP    63
-#define SO_TIMESTAMPNS  64
-#define SO_TIMESTAMPING 65
-#define SO_RCVTIMEO     66
-#define SO_SNDTIMEO     67

include/sys/socket.h

@@ -225,15 +225,26 @@ struct linger {
 #endif
 
 #ifndef SO_RCVTIMEO
+#if __LONG_MAX == 0x7fffffff
+#define SO_RCVTIMEO     66
+#define SO_SNDTIMEO     67
+#else
 #define SO_RCVTIMEO     20
 #define SO_SNDTIMEO     21
 #endif
+#endif
 
 #ifndef SO_TIMESTAMP
+#if __LONG_MAX == 0x7fffffff
+#define SO_TIMESTAMP    63
+#define SO_TIMESTAMPNS  64
+#define SO_TIMESTAMPING 65
+#else
 #define SO_TIMESTAMP    29
 #define SO_TIMESTAMPNS  35
 #define SO_TIMESTAMPING 37
 #endif
+#endif
 
 #define SO_SECURITY_AUTHENTICATION              22
 #define SO_SECURITY_ENCRYPTION_TRANSPORT        23