x86/boot/compressed: Add missing debugging sections to output

Include the missing DWARF and STABS sections in the compressed image,
when they are present.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200821194310.3089815-29-keescook@chromium.org

arch/x86/boot/compressed/vmlinux.lds.S

@@ -69,6 +69,8 @@ SECTIONS
 	. = ALIGN(PAGE_SIZE);	/* keep ZO size page aligned */
 	_end = .;
 
+	STABS_DEBUG
+	DWARF_DEBUG
 	ELF_DETAILS
 
 	DISCARDS