ide: add "vlb|pci_clock=" parameter

* Add "vlb_clock=" parameter for specifying VLB clock frequency (in MHz).

* Add "pci_clock=" parameter for specifying PCI bus clock frequency (in MHz).

While at it:

* qd65xx.c: rename {active,recovery}_cycle variables to {act,rec}_cyc.

Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/pci/amd74xx.c b/drivers/ide/pci/amd74xx.c
index f7c8838..efcf543 100644
--- a/drivers/ide/pci/amd74xx.c
+++ b/drivers/ide/pci/amd74xx.c
@@ -179,7 +179,7 @@
  * Determine the system bus clock.
  */
 
-	amd_clock = system_bus_clock() * 1000;
+	amd_clock = (ide_pci_clk ? ide_pci_clk : system_bus_clock()) * 1000;
 
 	switch (amd_clock) {
 		case 33000: amd_clock = 33333; break;