eudev: remove superfluous keyboard_lookup_key()

The local declaration of the keyboard_lookup_key() function
is superfluous and also differs from that in keyboard-key-from-name.h

Closes #5569

srcpkgs/eudev/patches/fix-remove_keyboard_lookup_key_def.patch

@@ -0,0 +1,10 @@
+--- src/udev/udev-builtin-keyboard.c	2016-11-17 22:14:19.000000000 +0100
++++ src/udev/udev-builtin-keyboard.c	2017-01-18 00:29:56.667779140 +0100
+@@ -28,7 +28,6 @@
+ 
+ #include "udev.h"
+ 
+-static const struct key *keyboard_lookup_key(const char *str, unsigned len);
+ #include "keyboard-keys-from-name.h"
+ #include "keyboard-keys-to-name.h"
+ 

srcpkgs/eudev/template

@@ -4,7 +4,7 @@ _UDEV_VERSION="220" # compatible udev version provided
 
 pkgname=eudev
 version=3.2.1
-revision=1
+revision=2
 conf_files="/etc/udev/udev.conf"
 build_style=gnu-configure
 configure_args="--enable-hwdb --enable-manpages --disable-introspection"