treewide: Add Kconfig variable MEMLAYOUT_LD_FILE

This change defines a Kconfig variable MEMLAYOUT_LD_FILE which allows
SoC/mainboard to provide a linker file for the platform. x86 already
provides a default memlayout.ld under src/arch/x86. With this new
Kconfig variable, it is possible for the SoC/mainboard code for x86 to
provide a custom linker file as well.

Makefile.inc is updated for all architectures to use this new Kconfig
variable instead of assuming memlayout.ld files under a certain
path. All non-x86 boards used memlayout.ld under mainboard
directory. However, a lot of these boards were simply including the
memlayout from SoC. So, this change also updates these mainboards and
SoCs to define the Kconfig as required.

BUG=b:155322763
TEST=Verified that abuild with --timeless option results in the same
coreboot.rom image for all boards.

Change-Id: I6a7f96643ed0519c93967ea2c3bcd881a5d6a4d6
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42292
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 0 insertions, 4 deletions

diff --git a/src/mainboard/emulation/qemu-power8/Makefile.inc b/src/mainboard/emulation/qemu-power8/Makefile.inc
index b713df71c9..4011983923 100644
--- a/src/mainboard/emulation/qemu-power8/Makefile.inc
+++ b/src/mainboard/emulation/qemu-power8/Makefile.inc
@@ -7,7 +7,3 @@ romstage-y += romstage.c
 ramstage-y += timer.c
 romstage-y += uart.c
 ramstage-y += uart.c
-
-bootblock-y += memlayout.ld
-romstage-y += memlayout.ld
-ramstage-y += memlayout.ld