OvmfPkg/MemEncryptSevLib: Coding style fixes in prep for SEC library

OvmfPkg/MemEncryptSevLib: Coding style fixes in prep for SEC library

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3108

Creating an SEC version of the library requires renaming an existing file
which will result in the existing code failing ECC. Prior to renaming the
existing file, fix the coding style to avoid the ECC failure.

Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Message-Id: <f765d867da4a703e0a0db35e26515a911482fd40.1610045305.git.thomas.lendacky@amd.com>