poky: Update version to 2.6.1

(From meta-yocto rev: e8de212ef932e6e837483517dff324aa9d9bbe5d)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-poky/conf/distro/poky.conf

@@ -1,6 +1,6 @@
 DISTRO = "poky"
 DISTRO_NAME = "Poky (Yocto Project Reference Distro)"
-DISTRO_VERSION = "2.6"
+DISTRO_VERSION = "2.6.1"
 DISTRO_CODENAME = "thud"
 SDK_VENDOR = "-pokysdk"
 SDK_VERSION := "${@'${DISTRO_VERSION}'.replace('snapshot-${DATE}','snapshot')}"