powerpc/opal-lpc: Remove unneeded include

We don't need asm/xics.h
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/platforms/powernv/opal-lpc.c

@@ -18,7 +18,6 @@
 
 #include <asm/machdep.h>
 #include <asm/firmware.h>
-#include <asm/xics.h>
 #include <asm/opal.h>
 #include <asm/prom.h>
 #include <linux/uaccess.h>