[OE-core] [PATCH 1/3] sstate-cache-management.sh: fix remove duplicate failed when multiple archs

[Hongxu Jia]

The implementation of `--remove-duplicated' has been modified by the commit:
http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=0740f82aea92da0195524e37c372f9981e7f5e6d

In above commit, sstate cache files with multiple archs are not considered
duplicate and don't need to be removed as duplicated any more.

Update the description of `--remove-duplicated' in usage to keep consistent
with implementation.

[YOCTO #3635]

Signed-off-by: Hongxu Jia <hongxu.jia at windriver.com>
---
 scripts/sstate-cache-management.sh |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/scripts/sstate-cache-management.sh b/scripts/sstate-cache-management.sh
index 7d81daf..2d4a2a3 100755
--- a/scripts/sstate-cache-management.sh
+++ b/scripts/sstate-cache-management.sh
@@ -47,7 +47,9 @@ Options:
 
   -d, --remove-duplicated
         Remove the duplicated sstate cache files of one package, only
-        the newest one will be kept.
+        the newest one will be kept. The duplicated sstate cache files
+        of one package must have the same arch, which means sstate cache
+        files with multiple archs are not considered duplicate.
 
         Conflicts with --stamps-dir.
 
-- 
1.7.10.4