ArmPkg: Reproduce builds across source format changes

ArmPkg: Reproduce builds across source format changes

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3688

Use DEBUG_LINE_NUMBER instead of __LINE__.

Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>
Tested-by: Michael Kubacki <michael.kubacki@microsoft.com>