Add i386 arch for generic builds

src/boot.cfg

@@ -36,6 +36,7 @@ set menu_live 1
 set menu_security 1
 set menu_windows 1
 set menu_utils 1
+iseq ${buildarch} i386 && goto x86_64
 iseq ${buildarch} x86_64 && goto x86_64
 iseq ${buildarch} arm64 && goto arm64
 goto architectures_end
@@ -65,6 +66,7 @@ set console console=ttyS0,115200n8
 goto clouds_end
 
 :packet
+iseq ${buildarch} i386 && goto packet_x86_64
 iseq ${buildarch} x86_64 && goto packet_x86_64 ||
 iseq ${buildarch} arm64 && goto packet_arm64 ||
 goto clouds_end