Revert "x86/build: Move _etext to actual end of .text"

This reverts commit 392bef709659abea614abfe53cf228e7a59876a4.

It seems to cause lots of problems when using the gold linker, and no
one really needs this at the moment, so just revert it from the stable
trees.

Cc: Sami Tolvanen <samitolvanen@google.com>
Reported-by: NKees Cook <keescook@chromium.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Reported-by: NAlec Ari <neotheuser@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

arch/x86/kernel/vmlinux.lds.S

@@ -151,10 +151,10 @@ SECTIONS
 		*(.text.__x86.indirect_thunk)
 		__indirect_thunk_end = .;
 #endif
-	} :text = 0x9090
 
 		/* End of text section */
 		_etext = .;
+	} :text = 0x9090
 
 	NOTES :text :note