misc: keba: Fix missing I2C dependency

Kernel test robot reported a build error on csky:

drivers/misc/keba/cp500.c:287:(.text+0x1c0): undefined reference to `i2c_verify_client'

Add I2C dependency to fix build error.

Fixes: 79484830 ("misc: keba: Add SPI controller device")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202410130817.NXBCxx4q-lkp@intel.com/


Signed-off-by: Gerhard Engleder <eg@keba.com>
Link: https://lore.kernel.org/r/20241016182751.10457-1-gerhard@engleder-embedded.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>