hw/ppc/mac.h: Move grackle-pcihost type declaration out to a header

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <b133a84dfd38366eea2bb11b7ca433758efacc10.1666957578.git.balaton@eik.bme.hu>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
diff --git a/MAINTAINERS b/MAINTAINERS
index c41d8d6..9f424bc 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1344,6 +1344,7 @@
 F: hw/input/adb*
 F: include/hw/intc/heathrow_pic.h
 F: include/hw/input/adb*
+F: include/hw/pci-host/grackle.h
 F: pc-bios/qemu_vga.ndrv
 
 PReP