configs/config.asrock_b85m_pro4...: Build-test ASan

This build-tests ASan support for both romstage and ramstage, because
the Haswell northbridge selects the HAVE_ASAN_IN_ROMSTAGE option. x86
Kconfig selects the HAVE_ASAN_IN_RAMSTAGE option, and Haswell is x86.

Change-Id: I892881d2315c09aa6d9d80903a8399d0f4d648e4
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50903
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Harshit Sharma <harshitsharmajs@gmail.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

configs/config.asrock_b85m_pro4.debug_smmstore_hotplug_gcov_ubsan_em100

@@ -3,6 +3,7 @@
 # the future, then this config can be split into several smaller chunks.
 # Exercises, among other things:
 # + Code coverage
+# + ASAN
 # + UBSAN
 # + Debug options
 # + SMMSTORE
@@ -11,6 +12,7 @@
 # + EM100 support
 # + SMM module loader V2
 CONFIG_COVERAGE=y
+CONFIG_ASAN=y
 CONFIG_UBSAN=y
 CONFIG_VENDOR_ASROCK=y
 CONFIG_ONBOARD_VGA_IS_PRIMARY=y