Code Scrub for MdePkg.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5567 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Library/BaseLib/Ia32/LRotU64.c

@@ -17,6 +17,20 @@
 //
 
 
+/**
+  Rotates a 64-bit integer left between 0 and 63 bits, filling
+  the low bits with the high bits that were rotated.
+
+  This function rotates the 64-bit value Operand to the left by Count bits. The
+  low Count bits are fill with the high Count bits of Operand. The rotated
+  value is returned.
+
+  @param  Operand The 64-bit operand to rotate left.
+  @param  Count   The number of bits to rotate left.
+
+  @return Operand <<< Count
+
+**/
 UINT64
 EFIAPI
 InternalMathLRotU64 (