dos2unix: bump to version 7.4.0

Add license hash.

Add reference to upstream tarball signature.

Cc: David Bachelart <david.bachelart@bbright.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/dos2unix/dos2unix.hash

@@ -1,2 +1,4 @@
 # Locally calculated after checking pgp signature
-sha256	8ccda7bbc5a2f903dafd95900abb5bf5e77a769b572ef25150fde4056c5f30c5	dos2unix-7.3.4.tar.gz
+# https://waterlan.home.xs4all.nl/dos2unix/dos2unix-7.4.0.tar.gz.asc
+sha256	bac765abdbd95cdd87a71989d4382c32cf3cbfeee2153f0086cb9cf18261048a	dos2unix-7.4.0.tar.gz
+sha256	49224e841621b52a72aa38d8ac895a396cd3fa1395190bdfc9252378001eb3c0	COPYING.txt

package/dos2unix/dos2unix.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-DOS2UNIX_VERSION = 7.3.4
+DOS2UNIX_VERSION = 7.4.0
 DOS2UNIX_SITE = http://waterlan.home.xs4all.nl/dos2unix
 DOS2UNIX_LICENSE = BSD-2-Clause
 DOS2UNIX_LICENSE_FILES = COPYING.txt