libavutil/arm/asm.S sets '.arch' depending on HAVE_ARMV5TE so that
assembling armv5te code will always succeed even if the default -march
flag does not support it. HAVE_ARMV5TE_EXTERNAL tests assembling code
with the default arch.
Fixes the missing symbol ff_prefetch_arm with --cpu= not including
armv5te.
CC: libav-stable@libav.org
#include "config.h"
#include "libavutil/arm/asm.S"
-#if HAVE_ARMV5TE_EXTERNAL
function ff_prefetch_arm, export=1
subs r2, r2, #1
pld [r0]
bne ff_prefetch_arm
bx lr
endfunc
-#endif