brcm: Add 43340 based AP6234 NVRAM for the PoV TAB-P1006W-232 tablet

Add a NVRAM file for the Ampak AP6234 Wifi/BT module as used on the
Point of View TAB-P1006W-232 tablet. This file is based on the existing
brcm/brcmfmac43340-sdio.meegopad-t08.txt NVRAM file with some of the
values adjusted for the Point of View TAB-P1006W-232 tablet.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>