linux-obmc: Bump kernel version

 - 4.7.7 stable release
 - Enable RGMII pin functions in Firestone DT
 - All pinmux groups added to device tree

Change-Id: I1d6f0a7b66b5c8307c3fd7e056774b6f20f919dd
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/common/recipes-kernel/linux/linux-obmc_4.7.bb b/common/recipes-kernel/linux/linux-obmc_4.7.bb
index 29600e1..23b90b4 100644
--- a/common/recipes-kernel/linux/linux-obmc_4.7.bb
+++ b/common/recipes-kernel/linux/linux-obmc_4.7.bb
@@ -1,5 +1,5 @@
 KBRANCH ?= "dev-4.7"
 LINUX_VERSION ?= "4.7"
-SRCREV="ae3a462415c7c05a138658ef8ffa2f321262c4ec"
+SRCREV="9fc87f9c1103ad94063f2a819f21117c166e059d"
 
 require linux-obmc.inc