wilc1000: remove '-Wunused-but-set-variable' warning in chip_wakeup()

Remove unused variables to avoid the below warnings:

   drivers/net/wireless/microchip/wilc1000/wlan.c: In function 'chip_wakeup':
>> drivers/net/wireless/microchip/wilc1000/wlan.c:620:34: warning: variable 'to_host_from_fw_bit' set but not used [-Wunused-but-set-variable]
     620 |         u32 to_host_from_fw_reg, to_host_from_fw_bit;
         |                                  ^~~~~~~~~~~~~~~~~~~
>> drivers/net/wireless/microchip/wilc1000/wlan.c:620:13: warning: variable 'to_host_from_fw_reg' set but not used [-Wunused-but-set-variable]
     620 |         u32 to_host_from_fw_reg, to_host_from_fw_bit;
         |             ^~~~~~~~~~~~~~~~~~~
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211115102809.1408267-1-ajay.kathat@microchip.com

drivers/net/wireless/microchip/wilc1000/wlan.c

@@ -626,7 +626,6 @@ void chip_wakeup(struct wilc *wilc)
 	u32 clk_status_val = 0, trials = 0;
 	u32 wakeup_reg, wakeup_bit;
 	u32 clk_status_reg, clk_status_bit;
-	u32 to_host_from_fw_reg, to_host_from_fw_bit;
 	u32 from_host_to_fw_reg, from_host_to_fw_bit;
 	const struct wilc_hif_func *hif_func = wilc->hif_func;
 
@@ -637,8 +636,6 @@ void chip_wakeup(struct wilc *wilc)
 		clk_status_bit = WILC_SDIO_CLK_STATUS_BIT;
 		from_host_to_fw_reg = WILC_SDIO_HOST_TO_FW_REG;
 		from_host_to_fw_bit = WILC_SDIO_HOST_TO_FW_BIT;
-		to_host_from_fw_reg = WILC_SDIO_FW_TO_HOST_REG;
-		to_host_from_fw_bit = WILC_SDIO_FW_TO_HOST_BIT;
 	} else {
 		wakeup_reg = WILC_SPI_WAKEUP_REG;
 		wakeup_bit = WILC_SPI_WAKEUP_BIT;
@@ -646,8 +643,6 @@ void chip_wakeup(struct wilc *wilc)
 		clk_status_bit = WILC_SPI_CLK_STATUS_BIT;
 		from_host_to_fw_reg = WILC_SPI_HOST_TO_FW_REG;
 		from_host_to_fw_bit = WILC_SPI_HOST_TO_FW_BIT;
-		to_host_from_fw_reg = WILC_SPI_FW_TO_HOST_REG;
-		to_host_from_fw_bit = WILC_SPI_FW_TO_HOST_BIT;
 	}
 
 	/* indicate host wakeup */