kbuild: rename hostprogs-y/always to hostprogs/always-y

In old days, the "host-progs" syntax was used for specifying host
programs. It was renamed to the current "hostprogs-y" in 2004.

It is typically useful in scripts/Makefile because it allows Kbuild to
selectively compile host programs based on the kernel configuration.

This commit renames like follows:

  always       ->  always-y
  hostprogs-y  ->  hostprogs

So, scripts/Makefile will look like this:

  always-$(CONFIG_BUILD_BIN2C) += ...
  always-$(CONFIG_KALLSYMS)    += ...
      ...
  hostprogs := $(always-y) $(always-m)

I think this makes more sense because a host program is always a host
program, irrespective of the kernel configuration. We want to specify
which ones to compile by CONFIG options, so always-y will be handier.

The "always", "hostprogs-y", "hostprogs-m" will be kept for backward
compatibility for a while.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
diff --git a/scripts/Makefile b/scripts/Makefile
index 4d41f48..5e75802 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -7,14 +7,14 @@
 
 HOST_EXTRACFLAGS += -I$(srctree)/tools/include
 
-hostprogs-$(CONFIG_BUILD_BIN2C)  += bin2c
-hostprogs-$(CONFIG_KALLSYMS)     += kallsyms
-hostprogs-$(BUILD_C_RECORDMCOUNT) += recordmcount
-hostprogs-$(CONFIG_BUILDTIME_TABLE_SORT) += sorttable
-hostprogs-$(CONFIG_ASN1)	 += asn1_compiler
-hostprogs-$(CONFIG_MODULE_SIG_FORMAT) += sign-file
-hostprogs-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += extract-cert
-hostprogs-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE) += insert-sys-cert
+always-$(CONFIG_BUILD_BIN2C)			+= bin2c
+always-$(CONFIG_KALLSYMS)			+= kallsyms
+always-$(BUILD_C_RECORDMCOUNT)			+= recordmcount
+always-$(CONFIG_BUILDTIME_TABLE_SORT)		+= sorttable
+always-$(CONFIG_ASN1)				+= asn1_compiler
+always-$(CONFIG_MODULE_SIG_FORMAT)		+= sign-file
+always-$(CONFIG_SYSTEM_TRUSTED_KEYRING)		+= extract-cert
+always-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE)	+= insert-sys-cert
 
 HOSTCFLAGS_sorttable.o = -I$(srctree)/tools/include
 HOSTCFLAGS_asn1_compiler.o = -I$(srctree)/include
@@ -30,10 +30,10 @@
 HOSTLDLIBS_sorttable = -lpthread
 endif
 
-always		:= $(hostprogs-y) $(hostprogs-m)
+hostprogs := $(always-y) $(always-m)
 
-# The following hostprogs-y programs are only build on demand
-hostprogs-y += unifdef
+# The following programs are only built on demand
+hostprogs += unifdef
 
 subdir-$(CONFIG_GCC_PLUGINS) += gcc-plugins
 subdir-$(CONFIG_MODVERSIONS) += genksyms