configs: Fix typo in apu_se.py

Change parser.add_options to parser.add_option

Change-Id: I8b0235a1bf9e01e915dec71d85b9da02c477eb34
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35175
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
diff --git a/configs/example/apu_se.py b/configs/example/apu_se.py
index 077ce4c..2e24079 100644
--- a/configs/example/apu_se.py
+++ b/configs/example/apu_se.py
@@ -174,7 +174,7 @@
                   help="number of physical banks per LDS module")
 parser.add_option("--ldsBankConflictPenalty", type="int", default=1,
                   help="number of cycles per LDS bank conflict")
-parser.add_options("--lds-size", type="int", default=65536,
+parser.add_option("--lds-size", type="int", default=65536,
                    help="Size of the LDS in bytes")
 parser.add_option('--fast-forward-pseudo-op', action='store_true',
                   help = 'fast forward using kvm until the m5_switchcpu'