a3: Update prebuilt kernel.

* Use 'a3000_prc_3gfull' instead of 'a3000_row_call' to fix several
issues.

Change-Id: I353de9c8ad7a730005b95b2a1668595ee2f8e5a7
a3: Set board name to "a3000_prc_3gfull".

Change-Id: I8733a41039674b6bf1eacb9d1c1b5b24a8b0021b