ShellPkg/UefiShellAcpiViewCommandLib: Add missing header files in INF

ShellPkg/UefiShellAcpiViewCommandLib: Add missing header files in INF

MadtParser.h and PpttParser.h are actually used but missing INF file,
which will generate warning message when building this package.

Cc: Jaben Carsey <jaben.carsey@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Zhichao Gao <zhichao.gao@intel.com>
Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
Reviewed-by: Zhichao Gao <zhichao.gao@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>