drivers/video/: Spelling fixes

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
diff --git a/drivers/video/aty/radeon_pm.c b/drivers/video/aty/radeon_pm.c
index 83ee3e7..675abda 100644
--- a/drivers/video/aty/radeon_pm.c
+++ b/drivers/video/aty/radeon_pm.c
@@ -2561,7 +2561,7 @@
 			pci_read_config_dword(rinfo->pdev, i * 4,
 					      &rinfo->cfg_save[i]);
 
-		/* Switch PCI power managment to D2. */
+		/* Switch PCI power management to D2. */
 		pci_disable_device(rinfo->pdev);
 		for (;;) {
 			pci_read_config_word(