Added arm arm 64 riscv64 for libxml2 recipe
Added arm arm 64 riscv64 for libxml2 recipe

haikuports/haikuports,haikuports/haikuports,haikuports/haikuports,Begasus/haikuports,Begasus/haikuports,Begasus/haikuports,Begasus/haikuports,haikuports/haikuports,Begasus/haikuports,haikuports/haikuports