flask: fix build after the introduction of DMOP

In 58cbc034 send_irq permission was removed but there was still
reference to it in policy file. Remove the stale reference.

And now we also need dm permission. Add that.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>

xsm/build: Further build fixes following the DMop series

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>

tools/flask/policy/modules/xen.if

@@ -58,7 +58,7 @@ define(`create_domain_common', `
 	allow $1 $2:mmu { map_read map_write adjust memorymap physmap pinpage mmuext_op updatemp };
 	allow $1 $2:grant setup;
 	allow $1 $2:hvm { cacheattr getparam hvmctl sethvmc
-			setparam nested altp2mhvm altp2mhvm_op send_irq };
+			setparam nested altp2mhvm altp2mhvm_op };
 ')
 
 # create_domain(priv, target)