u-boot: Fixes for kirkstone update

With the move to kirkstone we need further fixes related to upstream BSP
u-boot config changes. We disable CONFIG_ENV_IS_IN_MMC as we do not use it
and it also throws a compile error.
Additionaly, we remove the disabling of CONFIG_CMD_SAVEENV from here as it
is already disabled globally from meta-balena.
And last, we update the bootscript by increasing the fdt load address in order
to account for increased kernel size.

Signed-off-by: Florin Sarbu <florin@balena.io>

layers/meta-balena-fsl-arm/recipes-bsp/u-boot/files/balenaos_tweaks-imx.cfg

@@ -1,3 +1,3 @@
 CONFIG_ENV_SIZE=0x4000
 CONFIG_ENV_IS_NOWHERE=y
-CONFIG_CMD_SAVEENV=n
+CONFIG_ENV_IS_IN_MMC=n

layers/meta-balena-fsl-arm/recipes-bsp/u-boot/files/balenaos_tweaks.cfg

@@ -1,4 +1,4 @@
 CONFIG_ENV_SIZE=0x3000
 CONFIG_ENV_IS_NOWHERE=y
-CONFIG_CMD_SAVEENV=n
 CONFIG_USB_FUNCTION_FASTBOOT=n
+CONFIG_ENV_IS_IN_MMC=n

layers/meta-balena-fsl-arm/recipes-bsp/u-boot/files/bootscript-n8mm-allow-flashing-balenaOS.patch

@@ -21,7 +21,7 @@ index 92f3cbae46..63d49fb479 100644
  setexpr a_script  ${a_base} + 0x00800000
  setexpr a_zImage  ${a_base} + 0x00800000
 -setexpr a_fdt     ${a_base} + 0x03000000
-+setexpr a_fdt     ${a_base} + 0x03200000
++setexpr a_fdt     ${a_base} + 0x03300000
  setexpr a_initrd  ${a_base} + 0x03100000
  setexpr a_reset_cause_marker ${a_base} + 0x80
  setexpr a_reset_cause	     ${a_base} + 0x84

layers/meta-balena-fsl-arm/recipes-bsp/u-boot/files/bootscript-n8mm-dwe-Integrate-with-BalenaOS.patch

@@ -18,7 +18,7 @@ index 92f3cbae46..7677ed65f2 100644
  setexpr a_script  ${a_base} + 0x00800000
  setexpr a_zImage  ${a_base} + 0x00800000
 -setexpr a_fdt     ${a_base} + 0x03000000
-+setexpr a_fdt     ${a_base} + 0x03200000
++setexpr a_fdt     ${a_base} + 0x03300000
  setexpr a_initrd  ${a_base} + 0x03100000
  setexpr a_reset_cause_marker ${a_base} + 0x80
  setexpr a_reset_cause	     ${a_base} + 0x84