[PATCH] kbuild: add KBUILD_DEFCONFIG

[Masahiro Yamada]

This allows "make ARCH=... defconfig".

Fox example, you can type "make defconfig" instead of
"make sandbox_defconfig".

Signed-off-by: Masahiro Yamada <yamada.m at jp.panasonic.com>
---

 arch/arm/Makefile      | 1 +
 arch/blackfin/Makefile | 1 +
 arch/efi/Makefile      | 2 ++
 arch/nios2/Makefile    | 2 ++
 arch/openrisc/Makefile | 2 ++
 arch/sandbox/Makefile  | 1 +
 arch/x86/Makefile      | 2 ++
 7 files changed, 11 insertions(+)

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index f06e2a0..9dd983b 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -1,3 +1,4 @@
+KBUILD_DEFCONFIG := versatilepb_defconfig
 
 CPPFLAGS	+= -D__ARM__ -fno-strict-aliasing
 # Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
diff --git a/arch/blackfin/Makefile b/arch/blackfin/Makefile
index 381c6a9..5c43bf7 100644
--- a/arch/blackfin/Makefile
+++ b/arch/blackfin/Makefile
@@ -1,3 +1,4 @@
+KBUILD_DEFCONFIG := ipe337_defconfig
 
 CPPFLAGS += -fno-strict-aliasing
 
diff --git a/arch/efi/Makefile b/arch/efi/Makefile
index 85cb655..b078bd0 100644
--- a/arch/efi/Makefile
+++ b/arch/efi/Makefile
@@ -1,3 +1,5 @@
+KBUILD_DEFCONFIG := efi_defconfig
+
 CFLAGS += -fpic -fshort-wchar -mno-sse -mno-mmx
 
 ifeq ($(CONFIG_X86_32),y)
diff --git a/arch/nios2/Makefile b/arch/nios2/Makefile
index 681944f..d079190 100644
--- a/arch/nios2/Makefile
+++ b/arch/nios2/Makefile
@@ -1,3 +1,5 @@
+KBUILD_DEFCONFIG := generic_defconfig
+
 CPPFLAGS += -fno-strict-aliasing -mno-hw-mul
 
 board-$(CONFIG_GENERIC) := generic
diff --git a/arch/openrisc/Makefile b/arch/openrisc/Makefile
index b0c8566..5394afb 100644
--- a/arch/openrisc/Makefile
+++ b/arch/openrisc/Makefile
@@ -1,3 +1,5 @@
+KBUILD_DEFCONFIG := generic_defconfig
+
 CPPFLAGS += -D__OR1K__ -ffixed-r10 -mhard-mul -mhard-div
 
 board-$(CONFIG_GENERIC) := generic
diff --git a/arch/sandbox/Makefile b/arch/sandbox/Makefile
index ed5d3a3..e3fb039 100644
--- a/arch/sandbox/Makefile
+++ b/arch/sandbox/Makefile
@@ -1,3 +1,4 @@
+KBUILD_DEFCONFIG := sandbox_defconfig
 
 CPPFLAGS += -D__SANDBOX__ -fno-strict-aliasing
 
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index a78fa22..da17d70 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -1,3 +1,5 @@
+KBUILD_DEFCONFIG := generic_defconfig
+
 CPPFLAGS += -D__X86__ -fno-strict-aliasing
 
 board-y := x86_generic
-- 
1.9.1