bta_gattc_cache: Use GATT caching for devices with LMP version 5.1

This is a workaround for devices which are on the market and does not
like Androids Database hash read.

With this patch, Android requires LMP version 5.1 to read Database hash.

Bug: 241324007
Test: Manual testes with devices with different LMP version
Test: atest BluetoothInstrumentationTests
Tag: #feature
Change-Id: If48656d7eac5daeb1d7befce921270c1911b45e2