MIPS: vmlinux.lds.S: explicitly declare .got table

LLVM stack generates GOT table when building the kernel:

ld.lld: warning: <internal>:(.got) is being placed in '.got'

According to the debug assertions, it's not zero-sized and thus can't
be handled the way it's done for x86.
Also use the ARM64 path here and place it at the end of .text section.

Reported-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/kernel/vmlinux.lds.S

@@ -68,6 +68,8 @@ SECTIONS
 		SOFTIRQENTRY_TEXT
 		*(.fixup)
 		*(.gnu.warning)
+		. = ALIGN(16);
+		*(.got)	/* Global offset table */
 	} :text = 0
 	_etext = .;	/* End of text section */