kbuild: reintroduce ALLSOURCE_ARCHS support for tags/cscope

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For modules use symbols from another modules.

See more details in modules.txt.

ALLSOURCE_ARCHS

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For tags/TAGS/cscope targets, you can specify more than one archs

to be included in the databases, separated by blankspace. e.g.

    $ make ALLSOURCE_ARCHS="x86 mips arm" tags

	tree=${srctree}/

fi

# Detect if ALLSOURCE_ARCHS is set. If not, we assume SRCARCH

if [ "${ALLSOURCE_ARCHS}" = "" ]; then

	ALLSOURCE_ARCHS=${SRCARCH}

fi

# find sources in arch/$ARCH

find_arch_sources()

{

find_sources()

{

	find_arch_sources $1 "$2"

	find_include_sources "$2"

	find_other_sources "$2"

}

all_sources()

{

	find_sources $SRCARCH '*.[chS]'

	for arch in $ALLSOURCE_ARCHS

	do

		find_sources $arch '*.[chS]'

	done

	if [ ! -z "$archinclude" ]; then

		find_arch_include_sources $archinclude '*.[chS]'

	fi

	find_include_sources '*.[chS]'

	find_other_sources '*.[chS]'

}

all_kconfigs()

{

	find_sources $SRCARCH 'Kconfig*'

	find_sources $ALLSOURCE_ARCHS 'Kconfig*'

}

all_defconfigs()

{

	find_sources $SRCARCH "defconfig"

	find_sources $ALLSOURCE_ARCHS "defconfig"

}

docscope()