gnu: inspircd: Make most inputs non-native.

* gnu/packages/irc.scm (inspircd)[native-inputs]: Reduce to pkg-config.
Move the rest…
[inputs]: …here.

gnu/packages/irc.scm

@@ -549,15 +549,16 @@ interface for those who are accustomed to the ircII way of doing things.")
                        (string-append "--config-dir=" out-etc name)))
              #t)))))
     (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (inputs
      `(("gnutls" ,gnutls)
        ("libmaxminddb" ,libmaxminddb)
-       ("mysql" ,mysql)
        ("mbedtls-apache" ,mbedtls-apache)
+       ("mysql" ,mysql)
        ("openldap" ,openldap)
        ("openssl" ,openssl)
        ("pcre" ,pcre "bin")
        ("perl" ,perl)
-       ("pkg-config" ,pkg-config)
        ("postgresql" ,postgresql)
        ("re2" ,re2)
        ("sqlite" ,sqlite)