Fix build errors when CURRITUCK=y and I2C is not builtin (=m or is
not set). Fixes these build errors:

powerpc-linux-ld: arch/powerpc/platforms/44x/ppc476.o: in function `avr_halt_system':
ppc476.c:(.text+0x58): undefined reference to `i2c_smbus_write_byte_data'
powerpc-linux-ld: arch/powerpc/platforms/44x/ppc476.o: in function `ppc47x_device_probe':
ppc476.c:(.init.text+0x18): undefined reference to `i2c_register_driver'

Fixes: 2a2c74b2efcb ("IBM Akebono: Add the Akebono platform")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Closes: lore.kernel.org/r/202312010820.cmdwF5X9-lkp@intel.com
Cc: Alistair Popple <alistair@popple.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Michael Ellerman <mpe@ellerman.id.au>
---
 arch/powerpc/platforms/44x/Kconfig |    1 +
 1 file changed, 1 insertion(+)

diff -- a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
--- a/arch/powerpc/platforms/44x/Kconfig
+++ b/arch/powerpc/platforms/44x/Kconfig
@@ -173,6 +173,7 @@ config ISS4xx
 config CURRITUCK
 	bool "IBM Currituck (476fpe) Support"
 	depends on PPC_47x
+	select I2C
 	select SWIOTLB
 	select 476FPE
 	select FORCE_PCI

On Thu, 30 Nov 2023 21:51:59 -0800, Randy Dunlap wrote:
> Fix build errors when CURRITUCK=y and I2C is not builtin (=m or is
> not set). Fixes these build errors:
> 
> powerpc-linux-ld: arch/powerpc/platforms/44x/ppc476.o: in function `avr_halt_system':
> ppc476.c:(.text+0x58): undefined reference to `i2c_smbus_write_byte_data'
> powerpc-linux-ld: arch/powerpc/platforms/44x/ppc476.o: in function `ppc47x_device_probe':
> ppc476.c:(.init.text+0x18): undefined reference to `i2c_register_driver'
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc/44x: select I2C for CURRITUCK
      https://git.kernel.org/powerpc/c/4a74197b65e69c46fe6e53f7df2f4d6ce9ffe012

cheers