iwlwifi: consolidate apm_init() functions

Consolidate most iwlXXXX_apm_init() functions into single iwl_apm_init().
Keep iwl3945_apm_init(), but leverage iwl_apm_init() for most functionality.
Update 4965 init sequence to follow most recent factory recommendations.

Add following members to struct iwl_cfg to guide the init sequence:
pll_cfg_val (replaces needs_pll_cfg), set_l0s, use_bsm

Move L0S enable/disable from nic_config() functions to iwl_apm_init().
This satisifies the "FIXME: put here L1A -L0S w/a" notice, and complies
with factory-recommended sequence.

Add debug info message in iwl_apm_init(), and symmetrical message
in iwl_apm_stop().

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-1000.c

@@ -110,7 +110,7 @@ static struct iwl_lib_ops iwl1000_lib = {
 	.send_tx_power = iwl5000_send_tx_power,
 	.update_chain_flags = iwl_update_chain_flags,
 	.apm_ops = {
-		.init =	iwl5000_apm_init,
+		.init = iwl_apm_init,
 		.stop = iwl_apm_stop,
 		.config = iwl1000_nic_config,
 		.set_pwr_src = iwl_set_pwr_src,
@@ -163,7 +163,9 @@ struct iwl_cfg iwl1000_bgn_cfg = {
 	.mod_params = &iwl50_mod_params,
 	.valid_tx_ant = ANT_A,
 	.valid_rx_ant = ANT_AB,
-	.need_pll_cfg = true,
+	.pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
+	.set_l0s = false,
+	.use_bsm = false,
 	.max_ll_items = OTP_MAX_LL_ITEMS_1000,
 	.shadow_ram_support = false,
 	.ht_greenfield_support = true,
@@ -186,7 +188,9 @@ struct iwl_cfg iwl1000_bg_cfg = {
 	.mod_params = &iwl50_mod_params,
 	.valid_tx_ant = ANT_A,
 	.valid_rx_ant = ANT_AB,
-	.need_pll_cfg = true,
+	.pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
+	.set_l0s = false,
+	.use_bsm = false,
 	.max_ll_items = OTP_MAX_LL_ITEMS_1000,
 	.shadow_ram_support = false,
 	.ht_greenfield_support = true,