kbuild: export linux/{a.out,kvm,kvm_para}.h on headers_install_all

Export linux/a.out.h, linux/kvm.h and linux/kvm_para.h on
headers_install_all if at least one architecture has appropriate files
in arch-dependent headers.

Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Michal Marek <mmarek@suse.cz>
diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index 97319a8..ae31f95 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -20,15 +20,18 @@
 objhdr-y += version.h
 
 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/a.out.h \
-		  $(srctree)/include/asm-$(SRCARCH)/a.out.h),)
+		  $(srctree)/include/asm-$(SRCARCH)/a.out.h \
+		  $(INSTALL_HDR_PATH)/include/asm-*/a.out.h),)
 header-y += a.out.h
 endif
 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/kvm.h \
-		  $(srctree)/include/asm-$(SRCARCH)/kvm.h),)
+		  $(srctree)/include/asm-$(SRCARCH)/kvm.h \
+		  $(INSTALL_HDR_PATH)/include/asm-*/kvm.h),)
 header-y += kvm.h
 endif
 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/kvm_para.h \
-		  $(srctree)/include/asm-$(SRCARCH)/kvm_para.h),)
+		  $(srctree)/include/asm-$(SRCARCH)/kvm_para.h \
+		  $(INSTALL_HDR_PATH)/include/asm-*/kvm_para.h),)
 header-y += kvm_para.h
 endif