Fix merge error: mmap.c no longer exists in bfin/.

libc/sysdeps/linux/bfin/Makefile.arch

@@ -5,7 +5,7 @@
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 #
 
-CSRC := brk.c bsdsetjmp.c clone.c syscall.c mmap.c \
+CSRC := brk.c bsdsetjmp.c clone.c syscall.c \
 	sram-alloc.c sram-free.c dma-memcpy.c
 
 SSRC := __longjmp.S setjmp.S bsd-_setjmp.S vfork.S