Add fallocate/fallocate64/posix_fallocate/posix_fallocate64.

Bug: 5287571
Bug: 12612860
Change-Id: I4501b9c6cdf9a830336ce0b3afc4ea716b6a0f6f
diff --git a/libc/arch-arm64/syscalls.mk b/libc/arch-arm64/syscalls.mk
index f1de5a5..07ad5d5 100644
--- a/libc/arch-arm64/syscalls.mk
+++ b/libc/arch-arm64/syscalls.mk
@@ -48,6 +48,7 @@
 syscall_src += arch-arm64/syscalls/eventfd.S
 syscall_src += arch-arm64/syscalls/execve.S
 syscall_src += arch-arm64/syscalls/faccessat.S
+syscall_src += arch-arm64/syscalls/fallocate.S
 syscall_src += arch-arm64/syscalls/fchdir.S
 syscall_src += arch-arm64/syscalls/fchmod.S
 syscall_src += arch-arm64/syscalls/fchmodat.S