x86: link: Allow more space for U-Boot

The extra ACPI code increases U-Boot above it current size limit. Move
the start earlier to provide space.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/configs/chromebook_link_defconfig b/configs/chromebook_link_defconfig
index 82485a5..c59a7f3 100644
--- a/configs/chromebook_link_defconfig
+++ b/configs/chromebook_link_defconfig
@@ -1,5 +1,5 @@
 CONFIG_X86=y
-CONFIG_SYS_TEXT_BASE=0xFFF00000
+CONFIG_SYS_TEXT_BASE=0xFFEF0000
 CONFIG_SYS_MALLOC_F_LEN=0x2400
 CONFIG_NR_DRAM_BANKS=8
 CONFIG_ENV_SIZE=0x1000