ANDROID: Add utf8_data_table for case-folding support

The upstream commit 2b3d0478 ("unicode: Add utf8-data module") moved
the unicode nomalization functions into a module so that it could be
selectively included in the kernel based of support for case-folding.
In doing so, utf8-core.c uses symbol_request() to reference the
utf8_data_table symbol. Since GKI trims unused symbols, include
this symbol to our symbol list so that it doesn't get trimmed.

Link: https://lore.kernel.org/all/ZDnbW1qYmBLycefL@google.com/


Bug: 278561372
Change-Id: If6347087d8dffae63bb4af5d72b74f703f09b820
Signed-off-by: Will McVicker <willmcvicker@google.com>