staging: mt7621-pci: dt-bindings: update bindings doc removing sysctls registers

The sysctl register are already claimed by palmbus, so
pci fails to claim it. Device tree has been updated to not
use it at all with pcie. Update bindings documentation.
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Tested-by: NeilBrown <neil@brown.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt

@@ -43,8 +43,7 @@ Example for MT7621:
         reg = <0x1e140000 0x100    /* host-pci bridge registers */
                0x1e142000 0x100    /* pcie port 0 RC control registers */
                0x1e143000 0x100    /* pcie port 1 RC control registers */
-               0x1e144000 0x100    /* pcie port 2 RC control registers */
-               0x1e000000 0x100>;  /* sysctl */
+               0x1e144000 0x100>;  /* pcie port 2 RC control registers */
 
 		#address-cells = <3>;
 		#size-cells = <2>;