powerpc: Add arch/powerpc/tools directory

Move a couple of existing scripts under there. Remove scripts directory:
a script is a tool, a tool is not a script.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/Makefile

@@ -136,7 +136,7 @@ CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64
 endif
 
 ifdef CONFIG_MPROFILE_KERNEL
-    ifeq ($(shell $(srctree)/arch/powerpc/scripts/gcc-check-mprofile-kernel.sh $(CC) -I$(srctree)/include -D__KERNEL__),OK)
+    ifeq ($(shell $(srctree)/arch/powerpc/tools/gcc-check-mprofile-kernel.sh $(CC) -I$(srctree)/include -D__KERNEL__),OK)
         CC_FLAGS_FTRACE := -pg -mprofile-kernel
         KBUILD_CPPFLAGS += -DCC_USING_MPROFILE_KERNEL
     else

arch/powerpc/Makefile.postlink

@@ -11,7 +11,7 @@ include include/config/auto.conf
 include scripts/Kbuild.include
 
 quiet_cmd_relocs_check = CHKREL  $@
-      cmd_relocs_check = $(CONFIG_SHELL) $(srctree)/arch/powerpc/relocs_check.sh "$(OBJDUMP)" "$@"
+      cmd_relocs_check = $(CONFIG_SHELL) $(srctree)/arch/powerpc/tools/relocs_check.sh "$(OBJDUMP)" "$@"
 
 # `@true` prevents complaint when there is nothing to be done