cxl: Fix coccinelle warnings

Fix the following coccinelle warnings:

  drivers/misc/cxl/debugfs.c:46:0-23: WARNING: fops_io_x64 should be
      defined with DEFINE_DEBUGFS_ATTRIBUTE
  drivers/misc/cxl/guest.c:890:5-26: WARNING: Comparison to bool
  drivers/misc/cxl/irq.c:107:3-23: WARNING: Assignment of bool to 0/1
  drivers/misc/cxl/native.c:57:2-3: Unneeded semicolon
  drivers/misc/cxl/native.c:170:2-3: Unneeded semicolon

Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/drivers/misc/cxl/native.c b/drivers/misc/cxl/native.c
index c336350..c1216d3 100644
--- a/drivers/misc/cxl/native.c
+++ b/drivers/misc/cxl/native.c
@@ -54,7 +54,7 @@ static int afu_control(struct cxl_afu *afu, u64 command, u64 clear,
 				     AFU_Cntl | command);
 		cpu_relax();
 		AFU_Cntl = cxl_p2n_read(afu, CXL_AFU_Cntl_An);
-	};
+	}
 
 	if (AFU_Cntl & CXL_AFU_Cntl_An_RA) {
 		/*
@@ -167,7 +167,7 @@ int cxl_psl_purge(struct cxl_afu *afu)
 			cpu_relax();
 		}
 		PSL_CNTL = cxl_p1n_read(afu, CXL_PSL_SCNTL_An);
-	};
+	}
 	end = local_clock();
 	pr_devel("PSL purged in %lld ns\n", end - start);