Update PCD description.

Signed-off-by: Li Elvin <elvin.li@intel.com>
Reviewed-by: Fan Jeff <jeff.fan@intel.com>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13992 6f19259b-4bc3-4df7-8a09-765794883524
diff --git a/IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec b/IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec
index ce67160..025ebfb 100644
--- a/IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec
+++ b/IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec
@@ -202,6 +202,7 @@
   ## The PCD is used to specify memory base address for OPROM to find free memory.

   # Some OPROMs do not use EBDA or PMM to allocate memory for its usage, 

   # instead they find the memory filled with zero from 0x20000.

+  # The value should be a multiple of 4KB.

   # The range should be below the EBDA reserved range from 

   # (CONVENTIONAL_MEMORY_TOP - PcdEbdaReservedMemorySize) to CONVENTIONAL_MEMORY_TOP.

   gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdOpromReservedMemoryBase|0x60000|UINT32|0x3000000c