iotools: bump version

Pick up a couple patches.

Tested: Built iotools and witherspoon images
Change-Id: Ia9dfc5ec958c2aaa68f7a22ab35013e9cbb0f02a
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/common/recipes-devtools/iotools/iotools_1.6.bb b/common/recipes-devtools/iotools/iotools_1.6.bb
index 2a39286..af2cc76 100644
--- a/common/recipes-devtools/iotools/iotools_1.6.bb
+++ b/common/recipes-devtools/iotools/iotools_1.6.bb
@@ -2,7 +2,7 @@
 HOMEPAGE = "https://github.com/jonmayergoogle/iotools"
 LICENSE = "GPLv2"
 LIC_FILES_CHKSUM = "file://COPYING;md5=751419260aa954499f7abaabaa882bbe"
-SRCREV = "223a7be0885dd3d0dba910d55d06745bdfd846d8"
+SRCREV = "8d928b3360246b8ead95b442ca3887ce8b8f942f"
 SRC_URI = "git://git@github.com/jonmayergoogle/iotools.git;protocol=https"
 PV = "v1.6+git${SRCPV}"