powerpc/powernv-eeh: Consisely desribe what this file does

If the previous comment made sense, continue debugging or call your
doctor immediately.
Signed-off-by: NStewart Smith <stewart@linux.ibm.com>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>

arch/powerpc/platforms/powernv/eeh-powernv.c

 /*
- * The file intends to implement the platform dependent EEH operations on
- * powernv platform. Actually, the powernv was created in order to fully
- * hypervisor support.
+ * PowerNV Platform dependent EEH operations
  *
  * Copyright Benjamin Herrenschmidt & Gavin Shan, IBM Corporation 2013.
  *