AMD SATA: Correct »them implement« to »then implement« in comments

The following command was used to correct all occurences of this typo.

    $ git grep -l "them implem" | xargs sed -i 's/them implem/then implem/'

Change-Id: Iebd4635867d67861aaf4d4d64ca8a67e87833f38
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/3145
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/vendorcode/amd/cimx/sb900/Sata.c b/src/vendorcode/amd/cimx/sb900/Sata.c
index 98e1f57..fca8005 100644
--- a/src/vendorcode/amd/cimx/sb900/Sata.c
+++ b/src/vendorcode/amd/cimx/sb900/Sata.c
@@ -852,7 +852,7 @@
 {
   UINT32   ddBar5;
   sataBar5setting (pConfig, &ddBar5);
-  //If this is not S3 resume and also if SATA set to one of IDE mode, them implement drive detection workaround.
+  //If this is not S3 resume and also if SATA set to one of IDE mode, then implement drive detection workaround.
   if ( ! (pConfig->S3Resume) && ( ((pConfig->SataClass) != AHCI_MODE)  && ((pConfig->SataClass) != RAID_MODE) ) ) {
     sataDriveDetection (pConfig, &ddBar5);
   }