arch/: Clean what was made during context in distclean.

Cleaning during `clean_context` had the issue of remaking everything
when `menuconfig` was issued.  That's because `menuconfig` has a
`clean_context` on its way.

Signed-off-by: Abdelatif Guettouche <abdelatif.guettouche@espressif.com>

arch/or1k/src/Makefile

@@ -19,7 +19,7 @@
 ############################################################################
 
 include $(TOPDIR)/Make.defs
--include chip/Make.defs
+include chip/Make.defs
 
 ifeq ($(CONFIG_ARCH_MOR1KX),y)          # OpenRISC mor1kx
 ARCH_SUBDIR = mor1kx
@@ -181,8 +181,6 @@ depend: .depend
 
 context::
 
-clean_context::
-
 clean:
 ifeq ($(BOARDMAKE),y)
 	$(Q) $(MAKE) -C board clean
@@ -191,7 +189,7 @@ endif
 	$(call DELFILE, $(BIN))
 	$(call CLEAN)
 
-distclean: clean
+distclean:: clean
 ifeq ($(BOARDMAKE),y)
 	$(Q) $(MAKE) -C board distclean
 endif