treewide: Replace CONFIG(ARCH_xx) tests

Once we support building stages for different architectures,
such CONFIG(ARCH_xx) tests do not evaluate correctly anymore.

Change-Id: I599995b3ed5c4dfd578c87067fe8bfc8c75b9d43
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42183
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/lib/prog_loaders.c b/src/lib/prog_loaders.c
index 7088d8d..69e81cd 100644
--- a/src/lib/prog_loaders.c
+++ b/src/lib/prog_loaders.c
@@ -46,7 +46,7 @@
 
 	vboot_run_logic();
 
-	if (CONFIG(ARCH_X86) && CONFIG(BOOTBLOCK_NORMAL)) {
+	if (ENV_X86 && CONFIG(BOOTBLOCK_NORMAL)) {
 		if (legacy_romstage_selector(&romstage))
 			goto fail;
 	} else {
@@ -119,8 +119,7 @@
 	 * Only x86 systems using ramstage stage cache currently take the same
 	 * firmware path on resume.
 	 */
-	if (CONFIG(ARCH_X86) &&
-	    !CONFIG(NO_STAGE_CACHE))
+	if (ENV_X86 && !CONFIG(NO_STAGE_CACHE))
 		run_ramstage_from_resume(&ramstage);
 
 	vboot_run_logic();