[buildbot] phase1: execute new checksum target

[LEDE Commits]

jow pushed a commit to buildbot.git, branch master:
https://git.lede-project.org/?p=buildbot.git;a=commitdiff;h=50a902264012d6484a3b55ca72de5338f4e3fc9a

commit 50a902264012d6484a3b55ca72de5338f4e3fc9a
Author: Jo-Philipp Wich <jo at mein.io>
AuthorDate: Mon Aug 1 18:13:59 2016 +0200

    phase1: execute new checksum target
    
    Signed-off-by: Jo-Philipp Wich <jo at mein.io>
---
 phase1/master.cfg | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/phase1/master.cfg b/phase1/master.cfg
index b0b5133..6d6bb70 100644
--- a/phase1/master.cfg
+++ b/phase1/master.cfg
@@ -441,6 +441,14 @@ EOT''' %(ts[0], ts[0], ts[1]) ))
 		haltOnFailure = True
 	))
 
+	factory.addStep(ShellCommand(
+		name = "checksums",
+		description = "Calculating checksums",
+		command=["make", "-j1", "checksum", "V=s"],
+		doStepIf = isChangeBuiltin,
+		haltOnFailure = True
+	))
+
 	# sign
 	if gpg_keyid is not None:
 		factory.addStep(MasterShellCommand(