tools/include: adjust population of acpi/

Limit what gets exposed - in particular cpufreq/ and apei.h are
hypervisor private headers which the tool stack building shouldn't see
or use. Also don't pass -f to ln, to allow noticing name collisions
right away.

Additionally acpi/ also has been in need of deleting at the start of
the rule, or alternatively the respective ln would have needed to also
be passed -n.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Tested-by: Bertrand Marquis <bertrand.marquis@arm.com>
Acked-by: Wei Liu <wl@xen.org>

tools/include/Makefile

@@ -16,15 +16,16 @@ XEN_PUBLIC_INCLUDES = $(wildcard $(XEN_ROOT)/xen/include/public/*.h)
 XEN_LIB_X86_INCLUDES = $(filter-out %autogen.h, $(XEN_ROOT)/xen/include/xen/lib/x86/Makefile $(wildcard $(XEN_ROOT)/xen/include/xen/lib/x86/*.h))
 
 xen/.dir: $(XEN_PUBLIC_INCLUDES) $(XEN_LIB_X86_INCLUDES)
-	@rm -rf xen
-	mkdir -p xen/libelf
+	@rm -rf xen acpi
+	mkdir -p xen/libelf acpi
 	ln -sf $(XEN_ROOT)/xen/include/public/COPYING xen
 	ln -sf $(XEN_PUBLIC_INCLUDES) xen
 	ln -sf $(addprefix $(XEN_ROOT)/xen/include/public/,arch-x86 arch-arm hvm io xsm) xen
 	ln -sf ../xen-sys/$(XEN_OS) xen/sys
 	ln -sf $(addprefix $(XEN_ROOT)/xen/include/xen/,libelf.h elfstructs.h) xen/libelf/
 	ln -s ../xen-foreign xen/foreign
-	ln -sf $(XEN_ROOT)/xen/include/acpi acpi
+	ln -s $(XEN_ROOT)/xen/include/acpi/platform acpi/
+	ln -s $(XEN_ROOT)/xen/include/acpi/ac*.h acpi/
 ifeq ($(CONFIG_X86),y)
 	ln -sf $(XEN_ROOT)/xen/include/asm-x86 xen/asm
 	mkdir -p xen/lib/x86