fstools: update to latest git HEAD

8ab4fda fstools: add btrfs support

Signed-off-by: John Crispin <[email protected]>

package/system/fstools/Makefile

@@ -12,9 +12,9 @@ PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(LEDE_GIT)/project/fstools.git
-PKG_SOURCE_DATE:=2017-07-12
-PKG_SOURCE_VERSION:=0dfe61a86255b877dd67b2ba3479709ecf7632ae
-PKG_MIRROR_HASH:=9f6053aaedb2f53dcda934e910e8d039b6b3e16acd85462881e374bb9ffc5e25
+PKG_SOURCE_DATE:=2017-07-31
+PKG_SOURCE_VERSION:=8ab4fda66a136f5b0f1e5dff9d3649961ffc9158
+PKG_MIRROR_HASH:=f04712fbefbcc2af1da9364310ac6dd771322c3ce2d920d2c003aaea97dbe4b4
 CMAKE_INSTALL:=1
 
 PKG_LICENSE:=GPL-2.0