Add {get,set}domainname(2)

{get,set}domainname aren't in POSIX but are widely-implemented
extensions.

The Linux kernel provides a setdomainname syscall but not a symmetric
getdomainname syscall, since it expects userspace to get the domain name
from uname(2).

Change-Id: I96726c242f4bb646c130b361688328b0b97269a0
Signed-off-by: Greg Hackmann <ghackmann@google.com>
diff --git a/libc/arch-mips/syscalls/setdomainname.S b/libc/arch-mips/syscalls/setdomainname.S
new file mode 100644
index 0000000..ec0504c
--- /dev/null
+++ b/libc/arch-mips/syscalls/setdomainname.S
@@ -0,0 +1,19 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(setdomainname)
+    .set noreorder
+    .cpload t9
+    li v0, __NR_setdomainname
+    syscall
+    bnez a3, 1f
+    move a0, v0
+    j ra
+    nop
+1:
+    la t9,__set_errno_internal
+    j t9
+    nop
+    .set reorder
+END(setdomainname)