initscripts: Clean up license handling/identifiers

The license is clear, add an SPDX license identification headers to the scripts
and drop the weird patch, we don't need it.

(From OE-Core rev: 540041ac80cfc91df61b45d48f9c9ebbc9b2e71e)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/initscripts/initscripts_1.0.bb

@@ -3,7 +3,7 @@ HOMEPAGE = "https://github.com/fedora-sysv/initscripts"
 DESCRIPTION = "Initscripts provide the basic system startup initialization scripts for the system.  These scripts include actions such as filesystem mounting, fsck, RTC manipulation and other actions routinely performed at system startup.  In addition, the scripts are also used during system shutdown to reverse the actions performed at startup."
 SECTION = "base"
 LICENSE = "GPL-2.0-only"
-LIC_FILES_CHKSUM = "file://COPYING;md5=751419260aa954499f7abaabaa882bbe"
+LIC_FILES_CHKSUM = "file://functions;beginline=7;endline=7;md5=829e563511c9a1d6d41f17a7a4989d6a"
 PR = "r155"
 
 INHIBIT_DEFAULT_DEPS = "1"
@@ -31,7 +31,6 @@ SRC_URI = "file://functions \
            file://read-only-rootfs-hook.sh \
            file://volatiles \
            file://save-rtc.sh \
-           file://GPLv2.patch \
            file://dmesg.sh \
            file://logrotate-dmesg.conf \
            ${@bb.utils.contains('DISTRO_FEATURES','selinux','file://sushell','',d)} \