[arm] Add neon-vfpv3 to list of FPUs recognized by the assembler

[Nick Clifton]

Hi Richard,

> GCC recently added neon-vfpv3 as an alias for neon in -mfpu.  This patch
> adds a similar alias in GAS.
> 
> 	* config/tc-arm.c (arm_fpus): Add neon-vfpv3 as an alias for neon.

Would you mind updating gas/doc/c-arm.texi to include this option value ?

In fact there seem to be several values missing from the table in c-arm.texi
so if you wouldn't mind adding them all, that would be much appreciated.

Cheers
  Nick