package/darkhttpd: add license file

Add license file and, while at it, update indentation to two spaces

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 1906912a040b8d0d0a890a1a9160e2ee221e732b)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/darkhttpd/darkhttpd.hash

@@ -1,2 +1,3 @@
 # Locally generated
-sha256 a50417b622b32b5f421b3132cb94ebeff04f02c5fb87fba2e31147d23de50505 darkhttpd-1.12.tar.bz2
+sha256  a50417b622b32b5f421b3132cb94ebeff04f02c5fb87fba2e31147d23de50505  darkhttpd-1.12.tar.bz2
+sha256  6e1a2e45d8dd3c8835222e3c82e5cccde8e60f02d55555910e18715ec5dc6d04  darkhttpd.c

package/darkhttpd/darkhttpd.mk

@@ -8,6 +8,7 @@ DARKHTTPD_VERSION = 1.12
 DARKHTTPD_SITE = https://unix4lyfe.org/darkhttpd
 DARKHTTPD_SOURCE = darkhttpd-$(DARKHTTPD_VERSION).tar.bz2
 DARKHTTPD_LICENSE = MIT
+DARKHTTPD_LICENSE_FILES = darkhttpd.c
 
 define DARKHTTPD_BUILD_CMDS
 	$(TARGET_CONFIGURE_OPTS) $(MAKE) -C $(@D)