board: ti: Add missing common/Kconfig references

Add missing board/ti/common/Kconfig references for the platforms that
missed it. The intent is for the common Kconfig to be usable across TI
reference boards as required.

Reported-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
3 files changed