[SPARC64]: Makefile cleanups.

arch/sparc64/kernel/Makefile

@@ -2,8 +2,6 @@
 # Makefile for the linux kernel.
 #
 
-SH = $(CONFIG_SHELL)
-
 EXTRA_AFLAGS := -ansi
 
 EXTRA_TARGETS	:= head.o init_task.o

arch/sparc64/lib/Makefile

@@ -11,5 +11,3 @@ obj-y := PeeCeeI.o blockops.o debuglocks.o strlen.o strncmp.o \
 	 VIScsumcopyusr.o VISsave.o atomic.o rwlock.o bitops.o \
 	 dec_and_lock.o U3memcpy.o U3copy_from_user.o U3copy_to_user.o \
 	 U3copy_in_user.o mcount.o ipcsum.o
-
-include $(TOPDIR)/Rules.make

arch/sparc64/math-emu/Makefile

@@ -4,6 +4,4 @@
 
 obj-y    := math.o
 
-EXTRA_CFLAGS = -I. -I$(TOPDIR)/include/math-emu -w
-
-include $(TOPDIR)/Rules.make
+EXTRA_CFLAGS = -I. -Iinclude/math-emu -w

arch/sparc64/mm/Makefile

@@ -7,5 +7,3 @@ EXTRA_AFLAGS := -ansi
 obj-y    := ultra.o fault.o init.o generic.o extable.o
 
 obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
-
-include $(TOPDIR)/Rules.make

arch/sparc64/prom/Makefile

@@ -8,5 +8,3 @@ EXTRA_AFLAGS := -ansi
 L_TARGET = lib.a
 obj-y   := bootstr.o devops.o init.o memory.o misc.o \
 	   tree.o console.o printf.o p1275.o map.o
-
-include $(TOPDIR)/Rules.make

arch/sparc64/solaris/Makefile

@@ -8,5 +8,3 @@ solaris-objs := entry64.o fs.o misc.o signal.o systbl.o socket.o \
 		ioctl.o ipc.o socksys.o timod.o
 
 obj-$(CONFIG_SOLARIS_EMUL) += solaris.o
-
-include $(TOPDIR)/Rules.make