OvmfPkg: QemuVideoDxe: the VBE shim needs no 64-bit shifts (VS2010)
    
    The SegmentC local variable has type EFI_PHYSICAL_ADDRESS for (justified)
    style reasons. However, the 64-bit bit-shifts that it undergoes result in
    intrinsic calls when built with VS2010 for Ia32 / NOOPT.
    
    The concrete value of SegmentC, 0xC0000, and the results  of the bitops
    that are based on it, are statically computeable. Cast SegmentC to UINT32
    before subjecting it to bitwise operations; we can see in advance that
    this won't lead to range loss.
    
    Contributed-under: TianoCore Contribution Agreement 1.0
    
    Signed-off-by: Scott Duplichan <scott@notabs.org>
    
    [lersek@redhat.com: dropped now superfluous outermost parens; commit msg]
    
    Signed-off-by: Laszlo Ersek <lersek@redhat.com>
    
    Build-tested-by: Scott Duplichan <scott@notabs.org>
    
    Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
    
    git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16385 6f19259b-4bc3-4df7-8a09-765794883524