build/allowed_deps.txt: add libaom_sve

This is a private dependency of libaom.

Apex-Size-Increase: libcodec2_soft_av1enc.so: ~65KiB
Previous-Platform-Support: yes
Aosp-First: true
Test-Info: new instructions will be covered by existing tests with \
  requisite hardware
Bug: 338678296
Test: presubmit + \
      (shiba) atest CtsMediaV2TestCases -- --module-arg \
        CtsMediaV2TestCases:instrumentation-arg:codec-prefix:=c2.android.av1.encoder \
      mmm external/libaom external/webrtc frameworks/av/media
Change-Id: I45602da9d807cd205b707e371e37318cc83e23fe

build/allowed_deps.txt

@@ -362,6 +362,7 @@ libaom(minSdkVersion:29)
 libaom_arm_crc32(minSdkVersion:29)
 libaom_neon_dotprod(minSdkVersion:29)
 libaom_neon_i8mm(minSdkVersion:29)
+libaom_sve(minSdkVersion:29)
 libapp_processes_protos_lite(minSdkVersion:(no version))
 libapp_processes_protos_lite(minSdkVersion:30)
 libarect(minSdkVersion:29)