Configure boot image profiles for platform and unbundled ART module

builds (reland).

- Use art/build/boot/boot-image-profile.txt for the primary boot image
  in the ART module, both when it's built from source in platform and
  as an unbundled module.

- Use frameworks/base/boot/boot-image-profile.txt for the framework
  extension image in platform, but not in unbundled builds.

This should obsolete the combined profile
frameworks/base/config/boot-image-profile.txt.

This relands https://r.android.com/1881863 with a fix to allow multiple
values on PRODUCT_DEX_PREOPT_BOOT_IMAGE_PROFILE_LOCATION.

Test: build/soong/soong_ui.bash --dumpvar-mode \
        PRODUCT_DEX_PREOPT_BOOT_IMAGE_PROFILE_LOCATION
  and check that it prints both art/build/boot/boot-image-profile.txt
  and frameworks/base/boot/boot-image-profile.txt in a platform build
  on master.
Test: build/soong/soong_ui.bash --dumpvar-mode \
        PRODUCT_DEX_PREOPT_BOOT_IMAGE_PROFILE_LOCATION
  and check that it prints only art/build/boot/boot-image-profile.txt
  in an unbundled build on master-art.
Test: banchan com.android.art && m
  on master-art and check that
  out/soong/.intermediates/art/build/apex/com.android.art/android_common_com.android.art_image/image.apex/javalib/x86_64/boot.oat
  shrinks from 14 MB to 4.7.
Test: m droid
  on master together with https://r.android.com/1895131 and check that
  out/soong/.intermediates/art/build/apex/com.android.art/android_common_com.android.art_image/image.apex/javalib/x86_64/boot.oat
  and out/target/product/vsoc_x86_64/system/framework/x86_64/boot-framework.oat
  are identical.
Test: lunch armv8-eng && art/tools/buildbot-build.sh
  on master-art
Bug: 174746397
Change-Id: I9114271bc69cf0888150b2c778a086bc50b73045