add libiconv support to libxml2 (#10664)

* add iconv support to libxml2

* libxml2, revbump, fix libiconv arch dependency

---------

Co-authored-by: Schrijvers Luc <begasus@gmail.com>

dev-libs/libxml2/libxml2-2.12.5.recipe

@@ -10,7 +10,7 @@ available in other environments."
 HOMEPAGE="http://www.xmlsoft.org/"
 COPYRIGHT="1998-2013 Daniel Veillard.  All Rights Reserved."
 LICENSE="MIT"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="https://download.gnome.org/sources/libxml2/2.12/libxml2-$portVersion.tar.xz"
 CHECKSUM_SHA256="a972796696afd38073e0f59c283c3a2f5a560b5268b4babc391b286166526b21"
 SOURCE_URI_2="https://www.w3.org/XML/Test/xmlts20130923.tar.gz"
@@ -44,6 +44,7 @@ fi
 REQUIRES="
 	haiku$secondaryArchSuffix
 	lib:libz$secondaryArchSuffix
+	lib:libiconv$secondaryArchSuffix
 	"
 
 PROVIDES_devel="
@@ -77,6 +78,7 @@ fi
 BUILD_REQUIRES="
 	haiku${secondaryArchSuffix}_devel
 	devel:libz$secondaryArchSuffix
+	devel:libiconv$secondaryArchSuffix
 	"
 if $pythonModuleEnabled; then
 	BUILD_REQUIRES="$BUILD_REQUIRES