x86: Fix comment typos in TLS relocation check

x86: Fix comment typos in TLS relocation check

R_386_TLS_IE is used only in

	movl foo@indntpoff, %eax
	movl foo@indntpoff, %reg
	addl foo@indntpoff, %reg

R_386_TLS_DESC_CALL and R_X86_64_TLSDESC_CALL are used only in

	call *x@tlscall(%[er]ax)

	* elf32-i386.c (elf_i386_check_tls_transition): Use foo@indntpoff
	in comments for R_386_TLS_IE check.
	(elf_i386_tls_transition): Use @tlscall in comments for
	R_386_TLS_DESC_CALL check.
	* elf64-x86-64.c (elf_x86_64_tls_transition): Use @tlscall in
	comments for R_X86_64_TLSDESC_CALL check.

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