usb: ehci-fsl: set INCR8 mode for system bus interface on MPC512x
Use INCR8 mode for system bus interface of the USB controller on MPC512x. This is a work-around for the AHB bus lock up problem observed on MPC512x when there is heavy simultaneous PATA write or network (FEC) activity. See also "12.4 The USB controller can issue transactions that lock up the AHB bus under certain conditions" in MPC5121e (M36P) Errata. Signed-off-by: NAnatolij Gustschin <agust@denx.de> Tested-by: NMatthias Fuchs <matthias.fuchs@esd.ue> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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