Automatically disable atapromise on non-x86

We do not support PCI port I/O on non-x86 (yet).
Atapromise needs PCI port I/O.

Corresponding to flashrom svn r1935.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
diff --git a/Makefile b/Makefile
index e430bad..d77c701 100644
--- a/Makefile
+++ b/Makefile
@@ -396,6 +396,11 @@
 else
 override CONFIG_ATAHPT = no
 endif
+ifeq ($(CONFIG_ATAPROMISE), yes)
+UNSUPPORTED_FEATURES += CONFIG_ATAPROMISE=yes
+else
+override CONFIG_ATAPROMISE = no
+endif
 ifeq ($(CONFIG_SATAMV), yes)
 UNSUPPORTED_FEATURES += CONFIG_SATAMV=yes
 else