lib/program.ld: Guard .id section placement

For x86, we place the .id section at 4GiB - CONFIG_ID_SECTION_OFFSET.
To take effect, we have to guard the conflicting default placement in
`program.ld`. Also, as we only include the .id section into the boot-
block, guard it by ENV_BOOTBLOCK too.

Change-Id: Idc7cbd670ce4f75b7790ff8d95578683e355ba7e
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/20810
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>

src/lib/program.ld

@@ -34,7 +34,10 @@
 	*(.rom.data);
 	*(.text._start);
 	*(.text.stage_entry);
+#if ENV_BOOTBLOCK && !(IS_ENABLED(CONFIG_ARCH_BOOTBLOCK_X86_32) || \
+		       IS_ENABLED(CONFIG_ARCH_BOOTBLOCK_X86_64))
 	KEEP(*(.id));
+#endif
 	*(.text);
 	*(.text.*);