fstools: update to git HEAD

 f0fc66a libfstools: check for overlay mounting errors
 128ecaf Update / fix extroot comments
 8a0ba3b libfstools: get rid of "extroot_prefix" global variable
 649cd3f libfstools: use variable for overlay mount-point
 922f1b3 libfstools: avoid segfault in find_mount_point
 ce5eacb libfstools: mtd: improve error handling
 898b328 blockd: restore device_move semantics
 0917d22 block: don't probe mtdblock on NAND (with legacy exceptions)

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

package/system/fstools/Makefile

@@ -12,9 +12,9 @@ PKG_RELEASE:=$(AUTORELEASE)
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/project/fstools.git
-PKG_MIRROR_HASH:=e4d8fcdf8f83749553be109c7c39141cc4495ac46d476c8d2dc6a0d8dccfb741
-PKG_SOURCE_DATE:=2021-11-16
-PKG_SOURCE_VERSION:=77c02889177c43df8ebe07bce4d55b7f7358118f
+PKG_MIRROR_HASH:=e63ad1c66ec31b45d815112bf3e25b3b0ea58962323624192a658a84b004a30d
+PKG_SOURCE_DATE:=2022-05-01
+PKG_SOURCE_VERSION:=0917d223d14bca9edd3f8c91e2828a7a960a21d1
 CMAKE_INSTALL:=1
 
 PKG_LICENSE:=GPL-2.0