x86: Improve TLS transition error check

Provide detailed TLS transition errors when unsupported instructions are
used.  Treat R_X86_64_CODE_4_GOTTPOFF and R_X86_64_CODE_6_GOTTPOFF as
R_X86_64_GOTTPOFF when performing TLS transition.

bfd/

	PR ld/32017
	* elf32-i386.c (elf_i386_check_tls_transition): Return different
	enums for different errors.
	(elf_i386_tls_transition): Change argument from r_symndx to sym.
	Call _bfd_x86_elf_link_report_tls_transition_error to report TLS
	transition errors.
	(elf_i386_scan_relocs): Pass isym instead of r_symndx to
	elf_i386_tls_transition.
	(elf_i386_relocate_section): Pass sym instead of r_symndx to
	elf_i386_tls_transition.
	* elf64-x86-64.c (elf_x86_64_check_tls_transition): Return
	different enums for different errors.
	(elf_x86_64_tls_transition): Change argument from r_symndx to sym.
	Treat R_X86_64_CODE_4_GOTTPOFF and R_X86_64_CODE_6_GOTTPOFF as
	R_X86_64_GOTTPOFF.  Call
	_bfd_x86_elf_link_report_tls_transition_error to report TLS
	transition errors.
	(elf_x86_64_scan_relocs): Pass isym instead of r_symndx to
	elf_x86_64_tls_transition.
	(elf_x86_64_relocate_section): Pass sym instead of r_symndx to
	elf_x86_64_tls_transition.
	* elfxx-x86.c (_bfd_x86_elf_link_report_tls_transition_error): New.
	* elfxx-x86.h (elf_x86_tls_error_type): Likewise.
	(_bfd_x86_elf_link_report_tls_transition_error): Likewise.

ld/

	PR ld/32017
	* testsuite/ld-i386/i386.exp: Run tlsgdesc1 and tlsgdesc2.
	* testsuite/ld-i386/tlsie2.d: Updated.
	* testsuite/ld-i386/tlsie3.d: Likewise.
	* testsuite/ld-i386/tlsie4.d: Likewise.
	* testsuite/ld-i386/tlsie5.d: Likewise.
	* testsuite/ld-x86-64/tlsie2.d: Likewise.
	* testsuite/ld-x86-64/tlsie3.d: Likewise.
	* testsuite/ld-i386/tlsgdesc1.d: New file.
	* testsuite/ld-i386/tlsgdesc1.s: Likewise.
	* testsuite/ld-i386/tlsgdesc2.d: Likewise.
	* testsuite/ld-i386/tlsgdesc2.s: Likewise.
	* testsuite/ld-x86-64/tlsdesc3.d: Likewise.
	* testsuite/ld-x86-64/tlsdesc3.s: Likewise.
	* testsuite/ld-x86-64/tlsdesc4.d: Likewise.
	* testsuite/ld-x86-64/tlsdesc4.s: Likewise.
	* testsuite/ld-x86-64/tlsie5.d: Likewise.
	* testsuite/ld-x86-64/tlsie5.s: Likewise.
	* testsuite/ld-x86-64/x86-64.exp: Run tlsie5, tlsdesc3 and
	tlsdesc4.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
(cherry picked from commit 1d68a49a)