MdeModulePkg/DxeCore: Fix coding style issues

Add comments for functions.

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>

MdeModulePkg/Core/Dxe/Mem/Pool.c

@@ -291,6 +291,17 @@ CoreAllocatePool (
   return Status;
 }
 
+/**
+  Internal function.  Used by the pool functions to allocate pages
+  to back pool allocation requests.
+
+  @param  PoolType               The type of memory for the new pool pages
+  @param  NoPages                No of pages to allocate
+  @param  Granularity            Bits to align.
+
+  @return The allocated memory, or NULL
+
+**/
 STATIC
 VOID *
 CoreAllocatePoolPagesI (
@@ -553,6 +564,14 @@ CoreFreePool (
   return Status;
 }
 
+/**
+  Internal function.  Frees pool pages allocated via CoreAllocatePoolPagesI().
+
+  @param  PoolType               The type of memory for the pool pages
+  @param  Memory                 The base address to free
+  @param  NoPages                The number of pages to free
+
+**/
 STATIC
 VOID
 CoreFreePoolPagesI (

MdeModulePkg/Core/Dxe/Misc/MemoryProtection.c

@@ -657,6 +657,8 @@ UnprotectUefiImage (
 /**
   Return the EFI memory permission attribute associated with memory
   type 'MemoryType' under the configured DXE memory protection policy.
+
+  @param MemoryType       Memory type.
 **/
 STATIC
 UINT64
@@ -788,7 +790,7 @@ MergeMemoryMapForProtectionPolicy (
 
 /**
   Remove exec permissions from all regions whose type is identified by
-  PcdDxeNxMemoryProtectionPolicy
+  PcdDxeNxMemoryProtectionPolicy.
 **/
 STATIC
 VOID
@@ -1053,7 +1055,7 @@ CoreInitializeMemoryProtection (
 }
 
 /**
-  Returns whether we are currently executing in SMM mode
+  Returns whether we are currently executing in SMM mode.
 **/
 STATIC
 BOOLEAN