This patch simplifies the table of CPUs supported in GCC by making
use of the new alias feature.  Most of the changes are fairly
straight-forward:
- arm7tdmi and arm7tdmi-s are the same thing.
- arm710t, arm720t and arm740t differ only in features external to the core
- arm920 and arm920t are the same thing; arm922t and arm940t differ from
  arm920t only in features external to the core; ep9312 is an arm920t-derived
  core that we continue to recognize for legacy reasons.
- arm10tdmi and arm1020t differ only in features external to the core.
- arm9e, arm946te-s, arm966e-s and arm968e-s differ only in features external
  to the core.
- arm10e, arm1020e and arm1022e differ only in features external to the core.

The arm10e/arm1020e/arm1022e change is the only one which changes
behaviour of the compiler slightly.  Previously, and for no reason
that I can remember, the scheduler for arm1020e/arm1022e was not used
for arm10e: this was probably an oversight.  The unification means
that the same scheduler is now used for all three cores.

	* config/arm/arm-cpus.in (arm7tdmi): Add an alias for arm7tdmi-s.
	(arm7tdmi-s): Delete CPU.
	(arm710t): Add aliases for arm720t and arm740t.
	(arm720t, arm740t): Delete CPUs.
	(arm920t): Add aliases for arm920, arm922t and arm940t.
	(arm920, arm922t, arm940t): Delete CPUs.
	(arm10tdmi): Add alias for arm1020t.
	(arm1020t): Delete CPU.
	(arm9e): Add aliases for arm946e-s, arm966e-s and arm968e-s.
	(arm946e-s, arm966e-s, arm968e-s): Delete CPUs.
	(arm10e): Add aliases for arm1020e and arm1022e.
	(arm1020e, arm1022e): Delete CPU.
	* config/arm/arm.md (generic_sched): Remove entries that are now
	handled by aliases.
	(generic_vfp): Likewise.
	* config/arm/arm1020e.md: Simplify tuning selection based on alias
	changes.
	* config/arm/arm-tune.md: Regenerated.
	* config/arm/arm-tables.opt: Regenerated.

From-SVN: r265960