uboot-mediatek: fix FORESEE Flash build warning

Remove unused variable to fix the warning:

drivers/mtd/nand/spi/foresee.c: In function 'f35sqa002g_ecc_get_status':
drivers/mtd/nand/spi/foresee.c:56:29: warning: unused variable 'nand' [-Wunused-variable]
   56 |         struct nand_device *nand = spinand_to_nand(spinand);
      |                             ^~~~

Signed-off-by: Shiji Yang <[email protected]>

package/boot/uboot-mediatek/patches/101-01-mtd-spinand-add-support-for-FORESEE-F35SQA002G.patch

@@ -40,7 +40,7 @@ Link: https://lore.kernel.org/linux-mtd/20231002140458.147605-1-mmkurbanov@salut
  
 --- /dev/null
 +++ b/drivers/mtd/nand/spi/foresee.c
-@@ -0,0 +1,97 @@
+@@ -0,0 +1,95 @@
 +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
 +/*
 + * Copyright (c) 2023, SberDevices. All Rights Reserved.
@@ -96,8 +96,6 @@ Link: https://lore.kernel.org/linux-mtd/20231002140458.147605-1-mmkurbanov@salut
 +
 +static int f35sqa002g_ecc_get_status(struct spinand_device *spinand, u8 status)
 +{
-+	struct nand_device *nand = spinand_to_nand(spinand);
-+
 +	switch (status & STATUS_ECC_MASK) {
 +	case STATUS_ECC_NO_BITFLIPS:
 +		return 0;

package/boot/uboot-mediatek/patches/101-02-mtd-spinand-add-support-for-FORESEE-F35SQA001G.patch

@@ -19,7 +19,7 @@ Signed-off-by: Miquel Raynal <[email protected]>
 
 --- a/drivers/mtd/nand/spi/foresee.c
 +++ b/drivers/mtd/nand/spi/foresee.c
-@@ -83,6 +83,16 @@ static const struct spinand_info foresee
+@@ -81,6 +81,16 @@ static const struct spinand_info foresee
  		     SPINAND_HAS_QE_BIT,
  		     SPINAND_ECCINFO(&f35sqa002g_ooblayout,
  				     f35sqa002g_ecc_get_status)),