[PATCH 2/3] s390: Use the generic msi.h

[Palmer Dabbelt <palmer@xxxxxxxxxx>]

Without this I can't enable PCI_MSI_IRQ_DOMAIN, which as far as I can
tell only depends on generic functionality provided by msi.h.
PCI_MSI_IRQ_DOMAIN has historically had a whitelist of supported
architectures, but that list is getting long enough that it's cleaner to
just enable it everywhere.

This builds with an s390 defconfig, but I have no access to s390 and
therefor can't even boot test it.

Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxx>
---
 arch/s390/include/asm/Kbuild | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/s390/include/asm/Kbuild b/arch/s390/include/asm/Kbuild
index 2531f673f099..afd35e55b358 100644
--- a/arch/s390/include/asm/Kbuild
+++ b/arch/s390/include/asm/Kbuild
@@ -21,6 +21,7 @@ generic-y += local64.h
 generic-y += mcs_spinlock.h
 generic-y += mm-arch-hooks.h
 generic-y += mmiowb.h
+generic-y += msi.h
 generic-y += trace_clock.h
 generic-y += unaligned.h
 generic-y += word-at-a-time.h
-- 
2.21.0