aarch64.c, [...]: Add comment above target-def.h include.

aarch64.c, [...]: Add comment above target-def.h include.

gcc/
	* config/aarch64/aarch64.c, config/alpha/alpha.c,
	config/arm/arm.c, config/avr/avr.c, config/bfin/bfin.c,
	config/c6x/c6x.c, config/cr16/cr16.c, config/cris/cris.c,
	config/fr30/fr30.c, config/frv/frv.c, config/h8300/h8300.c,
	config/i386/i386.c, config/ia64/ia64.c, config/iq2000/iq2000.c,
	config/lm32/lm32.c, config/m32c/m32c.c, config/m32r/m32r.c,
	config/m68k/m68k.c, config/mcore/mcore.c, config/mep/mep.c,
	config/microblaze/microblaze.c, config/mips/mips.c,
	config/mmix/mmix.c, config/mn10300/mn10300.c,
	config/moxie/moxie.c, config/msp430/msp430.c,
	config/nds32/nds32.c, config/nios2/nios2.c, config/nvptx/nvptx.c,
	config/pa/pa.c, config/pdp11/pdp11.c, config/rl78/rl78.c,
	config/rs6000/rs6000.c, config/rx/rx.c, config/s390/s390.c,
	config/sh/sh.c, config/sparc/sparc.c, config/spu/spu.c,
	config/stormy16/stormy16.c, config/tilegx/tilegx.c,
	config/tilepro/tilepro.c, config/v850/v850.c, config/vax/vax.c,
	config/visium/visium.c, config/xtensa/xtensa.c: Add comment above
	target-def.h include.
	* config/ft32/ft32.c: Likewise.  Fix misapplied hunk.

From-SVN: r224980