crypto: qat - fix wording and formatting in code comment

Remove an unintentional extra space and improve the readability of a
PFVF related code comment.
Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/qat/qat_common/adf_pfvf_msg.h

@@ -9,7 +9,7 @@
  * PF<->VF Gen2 Messaging format
  *
  * The PF has an array of 32-bit PF2VF registers, one for each VF. The
- * PF can access all these registers; each VF can access only the one
+ * PF can access all these registers while each VF can access only the one
  * register associated with that particular VF.
  *
  * The register functionally is split into two parts: