[ofw][patch][ibal] use non-pageable memory to prevent possible problems on power down

[Leonid Keller]

IBAL uses pageable memory to create PnP context.
It can create possible problems in power down flows at the time of
system contention.
 
We saw some similar case at a customer.
There is no strong evidence that that is what influenced, but with this
patch IBAL will be more safe and at no cost.
 
Found by Hobin Lee (Xsigo).
 
Index: kernel/al_pnp.c
===================================================================
--- kernel/al_pnp.c (revision 2421)
+++ kernel/al_pnp.c (working copy)
@@ -587,7 +587,7 @@
  CL_ASSERT( p_reg );
 
  /* No context exists for this port.  Create one. */
- p_context = (al_pnp_context_t*)cl_pzalloc( sizeof(al_pnp_context_t) );
+ p_context = (al_pnp_context_t*)cl_zalloc( sizeof(al_pnp_context_t) );
  if( !p_context )
  {
   AL_PRINT( TRACE_LEVEL_ERROR, AL_DBG_ERROR,

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