nvmem: Correct some typos in comments

Fixed some confusing typos that were currently identified with codespell,
the details are as follows:

-in the code comments:
drivers/nvmem/brcm_nvram.c:25: underlaying ==> underlying
drivers/nvmem/core.c:1250: alredy ==> already
drivers/nvmem/core.c:1268: alredy ==> already
drivers/nvmem/lpc18xx_otp.c:24: reseverd ==> reserved
drivers/nvmem/microchip-otpc.c:159: devide ==> divide

Signed-off-by: Shen Lichuan <[e-mail]>
Acked-by: Vladimir Zapolskiy <[e-mail]>
Signed-off-by: Srinivas Kandagatla <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/nvmem/brcm_nvram.c

···
  *
  * @dev:		NVMEM device pointer
  * @nvmem_size:		Size of the whole space available for NVRAM
- * @data:		NVRAM data copy stored to avoid poking underlaying flash controller
+ * @data:		NVRAM data copy stored to avoid poking underlying flash controller
  * @data_len:		NVRAM data size
  * @padding_byte:	Padding value used to fill remaining space
  * @cells:		Array of discovered NVMEM cells

drivers/nvmem/core.c

···
 }
 
 /**
- * devm_nvmem_device_put() - put alredy got nvmem device
+ * devm_nvmem_device_put() - put already got nvmem device
  *
  * @dev: Device that uses the nvmem device.
  * @nvmem: pointer to nvmem device allocated by devm_nvmem_cell_get(),
···
 EXPORT_SYMBOL_GPL(devm_nvmem_device_put);
 
 /**
- * nvmem_device_put() - put alredy got nvmem device
+ * nvmem_device_put() - put already got nvmem device
  *
  * @nvmem: pointer to nvmem device that needs to be released.
  */

drivers/nvmem/lpc18xx_otp.c

···
  * LPC18xx OTP memory contains 4 banks with 4 32-bit words. Bank 0 starts
  * at offset 0 from the base.
  *
- * Bank 0 contains the part ID for Flashless devices and is reseverd for
+ * Bank 0 contains the part ID for Flashless devices and is reserved for
  * devices with Flash.
  * Bank 1/2 is generale purpose or AES key storage for secure devices.
  * Bank 3 contains control data, USB ID and generale purpose words.

drivers/nvmem/microchip-otpc.c

···
 	/*
 	 * We reach this point with off being multiple of stride = 4 to
 	 * be able to cross the subsystem. Inside the driver we use continuous
-	 * unsigned integer numbers for packet id, thus devide off by 4
+	 * unsigned integer numbers for packet id, thus divide off by 4
 	 * before passing it to mchp_otpc_id_to_packet().
 	 */
 	packet = mchp_otpc_id_to_packet(otpc, off / 4);