[PATCH v2 2/2] pwm: airoha: Add support for EN7581 SoC

[kernel test robot]

Hi Lorenzo,

kernel test robot noticed the following build errors:

[auto build test ERROR on robh/for-next]
[also build test ERROR on linus/master v6.11-rc3 next-20240812]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Lorenzo-Bianconi/dt-bindings-pwm-Document-Airoha-EN7581-PWM/20240812-003542
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link:    https://lore.kernel.org/r/d5abef7ee63f2c5df8bf3400c4d8a5ff72c706a9.1723393857.git.lorenzo%40kernel.org
patch subject: [PATCH v2 2/2] pwm: airoha: Add support for EN7581 SoC
config: i386-allyesconfig (https://download.01.org/0day-ci/archive/20240812/202408122207.joypBYZD-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240812/202408122207.joypBYZD-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408122207.joypBYZD-lkp@intel.com/

All errors (new ones prefixed by >>):

   ld: drivers/pwm/pwm-airoha.o: in function `airoha_pwm_config_flash_map':
>> pwm-airoha.c:(.text+0x127): undefined reference to `__ffsdi2'
   ld: drivers/pwm/pwm-airoha.o: in function `airoha_pwm_config_waveform':
   pwm-airoha.c:(.text+0x1ed): undefined reference to `__ffsdi2'
>> ld: pwm-airoha.c:(.text+0x26f): undefined reference to `__ffsdi2'

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki