QcomModulePkg: Use StrnCmp instead of StrCmp and correct the length check

1. Use StrnCmp instead of StrCmp
2. Correct the string length while doing StrnCpyS and StrnCatS
3. Correct the Sz check

Change-Id: I0980b698bd9e26b75f5ee0dcdd70e3b32095e672
1 file changed