x86: Return error for invalid relocation offset

x86: Return error for invalid relocation offset

Return error if relocation offset + relocation size > section size.

bfd/

	PR ld/32665
	* elf32-i386.c (elf_i386_scan_relocs): Return error for invalid
	relocation offset.
	* elf64-x86-64.c (elf_x86_64_scan_relocs): Likewise.

ld/

	PR ld/32665
	* testsuite/ld-x86-64/pr32665.err: New file.
	* testsuite/ld-x86-64/pr32665.o.bz2: Likewise.
	* testsuite/ld-x86-64/x86-64.exp: Run PR ld/32665 test.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>