kbuild: /bin/pwd -> pwd

Most places use pwd and rely on $PATH lookup. Moving the remaining
absolute path /bin/pwd users over for consistency.

Also, a reason for doing /bin/pwd -> pwd instead of the other way around
is because I believe build systems should make little assumptions on
host filesystem layout. Case in point, we do this kind of patching
already in NixOS.

Ref. commit 028568d84da3cfca49f5f846eeeef01441d70451
("kbuild: revert $(realpath ...) to $(shell cd ... && /bin/pwd)").

Signed-off-by: Bjørn Forsman <bjorn.forsman@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/Documentation/ia64/xen.txt b/Documentation/ia64/xen.txt
index c61a99f..a12c74c 100644
--- a/Documentation/ia64/xen.txt
+++ b/Documentation/ia64/xen.txt
@@ -41,7 +41,7 @@
 
  5. make initrd for Dom0/DomU
     # make -C linux-2.6.18-xen.hg ARCH=ia64 modules_install \
-      O=$(/bin/pwd)/build-linux-2.6.18-xen_ia64
+      O=$(pwd)/build-linux-2.6.18-xen_ia64
     # mkinitrd -f /boot/efi/efi/redhat/initrd-2.6.18.8-xen.img \
       2.6.18.8-xen --builtin mptspi --builtin mptbase \
       --builtin mptscsih --builtin uhci-hcd --builtin ohci-hcd \
diff --git a/Makefile b/Makefile
index efb942a..533fc1d 100644
--- a/Makefile
+++ b/Makefile
@@ -132,7 +132,7 @@
 # check that the output directory actually exists
 saved-output := $(KBUILD_OUTPUT)
 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
-								&& /bin/pwd)
+								&& pwd)
 $(if $(KBUILD_OUTPUT),, \
      $(error failed to create output directory "$(saved-output)"))
 
diff --git a/tools/power/cpupower/Makefile b/tools/power/cpupower/Makefile
index da205d1..1dd5f4f 100644
--- a/tools/power/cpupower/Makefile
+++ b/tools/power/cpupower/Makefile
@@ -26,7 +26,7 @@
 
 ifneq ($(OUTPUT),)
 # check that the output directory actually exists
-OUTDIR := $(shell cd $(OUTPUT) && /bin/pwd)
+OUTDIR := $(shell cd $(OUTPUT) && pwd)
 $(if $(OUTDIR),, $(error output directory "$(OUTPUT)" does not exist))
 endif
 
diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include
index 654efd9..3fab179 100644
--- a/tools/scripts/Makefile.include
+++ b/tools/scripts/Makefile.include
@@ -13,7 +13,7 @@
 
 # check that the output directory actually exists
 ifneq ($(OUTPUT),)
-OUTDIR := $(shell cd $(OUTPUT) && /bin/pwd)
+OUTDIR := $(shell cd $(OUTPUT) && pwd)
 $(if $(OUTDIR),, $(error output directory "$(OUTPUT)" does not exist))
 endif