Add build_mixed_kernels_ramdisk to otatools.zip

Bug: 381198695
Test: lunch cf_x86_64_phone-trunk_staging-userdebug && m otatools-package dist, out/dist/otatools.zip should contain bin/build_mixed_kernels_ramdisk
Ignore-AOSP-First: submit with ag/30720005 and then cherrypick to AOSP
Change-Id: I1c12d04db924b0f1a47f38f3c253178c46dbef11
diff --git a/core/Makefile b/core/Makefile
index 642c5bf..dbb8976 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -5686,6 +5686,7 @@
   brotli \
   bsdiff \
   build_image \
+  build_mixed_kernels_ramdisk_host \
   build_super_image \
   build_verity_metadata \
   build_verity_tree \