QcomModulePkg: Correct the SingleDtHdr address

Remove the additional page from the calculation of SingleDtHdr
because of the BootParamlistPtr->DtbOffset already have calculated
this page in DTBImgCheckAndAppendDT.

Change-Id: If986d3dfc4cfffba3ea64b179fcf3510c35c5e8d
1 file changed