SignedCapsulePkg/Universal/RecoveryModuleLoadPei: 4KB alignment

4KB alignment required because this module exceeds maximum size
for some NOOPT build configurations. This is a post-memory PEIM
that can be compressed, so size impacts for 4KB alignment can be
minimized. Must be in DLINK2_FLAGS to override DLINK_XIPFLAGS
for GCC PEIM build rules flags ordering.

Build failure detected with NOOPT AARCH64 builds.

Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>