Linker detection is incorrect under qemu-user.

[zachriggle]

Given a trivial ARM binary which needs a linker:

pwndbg> vmmap
LEGEND: STACK | HEAP | CODE | DATA | RWX | RODATA
    0x8000     0x9000 r-xp     1000 0      /home/user/a.out
    0x9000    0x10000 ---p     7000 0      /home/user/a.out
   0x10000    0x11000 r--p     1000 0      /home/user/a.out
   0x11000    0x12000 rw-p     1000 1000   /home/user/a.out
0xf67dd000 0xf67f5000 r--p    18000 0      [linker] <=== Note page permissions and start address
0xf6ffd000 0xf7000000 rw-p     3000 0      [stack]
pwndbg> aux
AT_BASE                  0xf67de000 <-- 0x464c457f <=== Note correct address and ELF header