ARM: tegra: remove redundant mkdirs from board Makefiles

None of harmony, seaboard, ventana, whistler directly build files from
../common/, so there's no need to mkdir the obj directory for such files.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

board/nvidia/harmony/Makefile

@@ -24,10 +24,6 @@
 
 include $(TOPDIR)/config.mk
 
-ifneq ($(OBJTREE),$(SRCTREE))
-$(shell mkdir -p $(obj)../common)
-endif
-
 LIB	= $(obj)lib$(BOARD).o
 
 COBJS	:= $(BOARD).o

board/nvidia/seaboard/Makefile

@@ -24,10 +24,6 @@
 
 include $(TOPDIR)/config.mk
 
-ifneq ($(OBJTREE),$(SRCTREE))
-$(shell mkdir -p $(obj)../common)
-endif
-
 LIB	= $(obj)lib$(BOARD).o
 
 COBJS	:= $(BOARD).o

board/nvidia/ventana/Makefile

@@ -25,7 +25,7 @@
 include $(TOPDIR)/config.mk
 
 ifneq ($(OBJTREE),$(SRCTREE))
-$(shell mkdir -p $(obj)../common $(obj)../seaboard)
+$(shell mkdir -p $(obj)../seaboard)
 endif
 
 LIB	= $(obj)lib$(BOARD).o

board/nvidia/whistler/Makefile

@@ -24,10 +24,6 @@
 
 include $(TOPDIR)/config.mk
 
-ifneq ($(OBJTREE),$(SRCTREE))
-$(shell mkdir -p $(obj)../common)
-endif
-
 LIB	= $(obj)lib$(BOARD).o
 
 COBJS	:= $(BOARD).o