This patch parsees physical RTCT entries and dump information about pseudo
RAM into the board XML files. A macro named PRE_RTVM_SW_SRAM_BASE_GPA is
added to the generated misc_cfg.h according to recent design changes.
This patch still writes the board XML file manually, following the
convention of the current framework. Using XML-based approach requires a
complete refinement of the current generation process as the root
`acrn-config` node has its own text among adjacent children.
Tracked-On: #5649
Signed-off-by: Junjie Mao <junjie.mao@intel.com>
