[source] perf: disable build for ARC, it is currently broken

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/c13f943d2a917fb1b4abe1cdde7f090285efd7a9

commit c13f943d2a917fb1b4abe1cdde7f090285efd7a9
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Tue May 2 15:03:59 2017 +0200

    perf: disable build for ARC, it is currently broken
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 package/devel/perf/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/devel/perf/Makefile b/package/devel/perf/Makefile
index a9e11b4..35f1719 100644
--- a/package/devel/perf/Makefile
+++ b/package/devel/perf/Makefile
@@ -26,7 +26,7 @@ include $(INCLUDE_DIR)/package.mk
 define Package/perf
   SECTION:=devel
   CATEGORY:=Development
-  DEPENDS:= +libelf1 +libdw +libpthread +librt +objdump @!LINUX_3_18 @!IN_SDK
+  DEPENDS:= +libelf1 +libdw +libpthread +librt +objdump @!LINUX_3_18 @!IN_SDK @!arc
   TITLE:=Linux performance monitoring tool
   VERSION:=$(LINUX_VERSION)-$(PKG_RELEASE)
   URL:=http://www.kernel.org