sysvinit: arm64 build fix

sysvinit was not able to be built for arm64 architectures.
The package patch was changed according to the suggestion of
Thomas Petazzoni.

Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/sysvinit/0001-fix-libcrypt-test.patch

@@ -6,12 +6,15 @@ Index: b/src/Makefile
 ===================================================================
 --- a/src/Makefile
 +++ b/src/Makefile
-@@ -78,7 +78,7 @@
+@@ -78,8 +78,9 @@ else
  endif
  
  # Additional libs for GNU libc.
 -ifneq ($(wildcard /usr/lib*/libcrypt.a),)
-+ifneq ($(wildcard $(SYSROOT)/usr/lib*/libcrypt.a),)
-   SULOGINLIBS	+= -lcrypt
+-  SULOGINLIBS	+= -lcrypt
++HAS_LIBCRYPT=$(shell f=`mktemp` && echo 'int main(void) {}' | $(CC) -o $$f -xc - -lcrypt >/dev/null 2>&1 && echo yes; rm -f $$f)
++ifeq ($(HAS_LIBCRYPT),yes)
++  SULOGINLIBS += -lcrypt
  endif
  
+ all:		$(BIN) $(SBIN) $(USRBIN)