e1000e: rename e1000e_reload_nvm() and call as function pointer

Rename e1000e_reload_nvm() to e1000e_reload_nvm_generic() to signify the
function is used for more than one MAC-family type, and set and use it as a
MAC ops function pointer to be consistent with the driver design.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/e1000e/hw.h b/drivers/net/ethernet/intel/e1000e/hw.h
index 50e114b..f82ecf5 100644
--- a/drivers/net/ethernet/intel/e1000e/hw.h
+++ b/drivers/net/ethernet/intel/e1000e/hw.h
@@ -830,6 +830,7 @@
 	s32  (*acquire)(struct e1000_hw *);
 	s32  (*read)(struct e1000_hw *, u16, u16, u16 *);
 	void (*release)(struct e1000_hw *);
+	void (*reload)(struct e1000_hw *);
 	s32  (*update)(struct e1000_hw *);
 	s32  (*valid_led_default)(struct e1000_hw *, u16 *);
 	s32  (*validate)(struct e1000_hw *);