elf: Add new LoongArch reloc types (110 to 126) into elf.h

These reloc types have been added in LoongArch psABI v2.30.

Link: https://github.com/loongson/la-abi-specs/blob/v2.30/laelf.adoc#relocation-types


Signed-off-by: Xi Ruoyao <xry111@xry111.site>