use separate directories for nommu setup

mk/vars.mk

@@ -11,9 +11,16 @@ BUILD_USER=		$(shell id -un)
 BUILD_GROUP=		$(shell id -gn)
 ifeq ($(ADK_TARGET_ABI),)
 ADK_SUFFIX:=		_${ADK_TARGET_SYSTEM}_${ADK_TARGET_LIBC}_${ADK_TARGET_CPU_ARCH}
+ifeq ($(ADK_TARGET_WITH_MMU),)
+ADK_SUFFIX:=		_${ADK_TARGET_SYSTEM}_${ADK_TARGET_LIBC}_${ADK_TARGET_CPU_ARCH}_nommu
+endif
+else
+ifeq ($(ADK_TARGET_WITH_MMU),)
+ADK_SUFFIX:=		_${ADK_TARGET_SYSTEM}_${ADK_TARGET_LIBC}_${ADK_TARGET_CPU_ARCH}_${ADK_TARGET_ABI}_nommu
 else
 ADK_SUFFIX:=		_${ADK_TARGET_SYSTEM}_${ADK_TARGET_LIBC}_${ADK_TARGET_CPU_ARCH}_${ADK_TARGET_ABI}
 endif
+endif
 
 # some global dirs
 BASE_DIR:=		$(ADK_TOPDIR)