MIPS objdump: Add `eabi32` and `eabi64` ABI options

MIPS objdump: Add `eabi32` and `eabi64` ABI options

Extend gpr and fpr register names with names suitable for both EABIs.

Heavily inspired by the EABI documenation written by Eric Christopher,
which can be read at
https://sourceware.org/legacy-ml/binutils/2003-06/msg00436.html

2025-02-15  Anghelo Carvajal  <angheloalf95@gmail.com>

	* mips-dis.c (mips_fpr_names_eabi32): New variable.
	(mips_fpr_names_eabi64): New variable.
	(mips_abi_choices): Add "eabi32" and "eabi64" options.

Signed-off-by: Anghelo Carvajal <angheloalf95@gmail.com>