Patch merged into coreboot/master: libpayload: usb: xhci: Count new Max Scratchpad Bufs bits from XHCI 1.1

the following patch was just integrated into master:
commit 57ddd9abc79048efc658878f021927846fef6a0a
Author: Julius Werner 
Date:   Fri Aug 7 13:14:20 2015 -0700

libpayload: usb: xhci: Count new Max Scratchpad Bufs bits from XHCI 1.1

The 1.1 revision of the XHCI specification added an extra 5 bits to the
    Max Scratchpad Bufs field of HCSPARAMS2 that newer controllers make use
    of. Not honoring these bits means we're not allocating as many
    scratchpad buffers as the controller expects, which means it will
    interpret some uninitialized values from the end of the pointer array as
    scratchpad buffer pointers, which obviously doesn't end well. Let's fix
    that.

BRANCH=none
    BUG=chrome-os-partner:42279
    TEST=Makes a USB-related memory corruption issue disappear.

Original-Change-Id: I7c907492339262bda31cdd2b5c0b588de7df8544
    Original-Signed-off-by: Julius Werner 
    Original-Reviewed-on: https://chromium-review.googlesource.com/291681
    Original-Reviewed-by: Aaron Durbin

Change-Id: Iba1007bfebffe1f564f78bb875fff9ba0fe11a38
    Signed-off-by: Julius Werner 
    Reviewed-on: http://review.coreboot.org/11189
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

See http://review.coreboot.org/11189 for details.

-gerrit