rules.mk: simplify FAKEROOT command line

Since fakeroot is patched to discover related ressources relative to the
STAGING_DIR_HOST environment variable, there is no need to pass the path
to faked or the preload library manually anymore.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

rules.mk

@@ -264,12 +264,7 @@ endif
 
 BUILD_KEY=$(TOPDIR)/key-build
 
-ifeq ($(HOST_OS),Darwin)
-  FAKEROOT_SO:=$(STAGING_DIR_HOST)/lib/libfakeroot.dylib
-else
-  FAKEROOT_SO:=$(STAGING_DIR_HOST)/lib/libfakeroot.so
-endif
-FAKEROOT:=$(STAGING_DIR_HOST)/bin/fakeroot -l $(FAKEROOT_SO) -f $(STAGING_DIR_HOST)/bin/faked
+FAKEROOT:=$(STAGING_DIR_HOST)/bin/fakeroot
 
 TARGET_CC:=$(TARGET_CROSS)gcc
 TARGET_CXX:=$(TARGET_CROSS)g++