Add NT_ARM_PAC_MASK and NT_MIPS_MSA from Linux 5.0 to elf.h

[Gabriel F. T. Gomes]

On Wed, Mar 20 2019, Joseph Myers wrote:
> This patch adds two new NT_* macros from Linux 5.0 to elf.h.

$ git show v4.20:include/uapi/linux/elf.h | grep -E "NT_ARM_PAC_MASK|NT_MIPS_MSA"
$ git show v5.0:include/uapi/linux/elf.h | grep -E "NT_ARM_PAC_MASK|NT_MIPS_MSA"
#define NT_ARM_PAC_MASK		0x406	/* ARM pointer authentication code masks */
#define NT_MIPS_MSA	0x802		/* MIPS SIMD registers */

OK.

> +#define NT_ARM_PAC_MASK	0x406		/* ARM pointer authentication
> +					   code masks.  */

OK.

> +#define NT_MIPS_MSA	0x802		/* MIPS SIMD registers.  */

OK.

Reviewed-by: Gabriel F. T. Gomes <gabriel@inconstante.eti.br>