ANDROID: iwl7000: mld: add BIOS revision compatibility check for PPAG command

Prevent potential issues when newer BIOS revisions
are used with firmware that doesn't support them for
PER_PLATFORM_ANT_GAIN_CMD.

Without this check, the driver may attempt to use
BIOS configurations that are incompatible with the
current firmware version, leading to dropping of
command in firmware without any failure notification
to driver.

Signed-off-by: Pagadala Yesu Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Change-Id: I8161dbe1a04af3738e00ab0fc13fe3dbfa9094ec
iwl7000-tree: 0c6b08e263df6981533fc7112e3945f43217e0af