usbmode: update to latest git HEAD

f40f84c support PantechMode
d8dc335 support Quanta and Blackberry modes
333e486 fix support for Option modems

Signed-off-by: John Crispin <john@phrozen.org>

package/utils/usbmode/Makefile

@@ -5,9 +5,9 @@ PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(LEDE_GIT)/project/usbmode.git
-PKG_SOURCE_DATE:=2017-05-24
-PKG_SOURCE_VERSION:=453da8e540b1c53d357b897d6c70372cd4633390
-PKG_MIRROR_HASH:=b4a7132b940192f2e9a74bd890bd7008ede701e1d52284c3ade0cdc7d663929f
+PKG_SOURCE_DATE:=2017-12-19
+PKG_SOURCE_VERSION:=f40f84c27534159066c94dadc0c08e0b255c3e26
+PKG_MIRROR_HASH:=840c7ee2843102b09d8943a20820025251cc259385e2b0bde6b7c8cce8190f83
 CMAKE_INSTALL:=1
 
 PKG_LICENSE:=GPL-2.0