exynos5250: make lowlevel_init_c.c benign

This file has mostly (but not entirely) been replaced by coreboot
stage files. We'll keep it around for a bit longer as a reference,
but in the meantime we'll stop compiling it as to avoid comptilation
issues as we change other parts of the code.

Change-Id: I669fb1e5a1517f35979590957d581bd33df53d29
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2269
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/cpu/samsung/exynos5250/Makefile.inc

@@ -12,7 +12,6 @@ bootblock-y += clock.c
 romstage-y += clock.c
 romstage-y += clock_init.c
 romstage-y += exynos_cache.c
-romstage-y += lowlevel_init_c.c
 romstage-y += pinmux.c
 romstage-y += power.c
 romstage-y += soc.c
@@ -29,7 +28,6 @@ romstage-y += dmc_init_ddr3.c
 ramstage-y += clock.c
 ramstage-y += clock_init.c
 ramstage-y += exynos_cache.c
-ramstage-y += lowlevel_init_c.c
 ramstage-y += pinmux.c
 ramstage-y += power.c
 ramstage-y += soc.c
@@ -37,7 +35,6 @@ ramstage-y += uart.c
 
 #ramstage-$(CONFIG_EXYNOS_ACE_SHA) += ace_sha.c
 #ramstage-$(CONFIG_SATA_AHCI) += sata.c
-ramstage-$(CONFIG_SPL_BUILD) += lowlevel_init_c.c
 
 exynos5250_add_bl1: $(obj)/coreboot.pre
 	printf "    DD         Adding Samsung Exynos5250 BL1\n"

src/cpu/samsung/exynos5250/lowlevel_init_c.c

@@ -23,6 +23,12 @@
  * MA 02111-1307 USA
  */
 
+/*
+ * FIXME: This file is essentially the "bootblock" leftover from U-Boot. For
+ * now it serves as a reference until all the resume-related stuff is added
+ * to the appropriate bootblock/romstage/ramstage files in coreboot.
+ */
+
 #include <common.h>
 #include <config.h>
 #include <cpu/samsung/exynos5-common/exynos5-common.h>