configs: Build test x86_64 on Sandy Bridge

Add defconfig to build test x86_64 code on Sandy Bridge.

Change-Id: I2c18af8bfa87636c68741e4759059276c287d052
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55472
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrik Tesarik <depate@das-labor.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/configs/config.hp_compaq_8200_elite_sff_pc.x86_64 b/configs/config.hp_compaq_8200_elite_sff_pc.x86_64
new file mode 100644
index 0000000..9bb5e38
--- /dev/null
+++ b/configs/config.hp_compaq_8200_elite_sff_pc.x86_64
@@ -0,0 +1,3 @@
+CONFIG_VENDOR_HP=y
+CONFIG_BOARD_HP_COMPAQ_8200_ELITE_SFF_PC=y
+CONFIG_USE_EXP_X86_64_SUPPORT=y