[PATCH 04/11] rust: io: add PortIo

[kernel test robot]

Hi Andrew,

kernel test robot noticed the following build errors:

[auto build test ERROR on 92a09c47464d040866cf2b4cd052bc60555185fb]

url:    https://github.com/intel-lab-lkp/linux/commits/Andrew-Ballance/rust-helpers-io-use-macro-to-generate-io-accessor-functions/20250509-111818
base:   92a09c47464d040866cf2b4cd052bc60555185fb
patch link:    https://lore.kernel.org/r/20250509031524.2604087-5-andrewjballance%40gmail.com
patch subject: [PATCH 04/11] rust: io: add PortIo
config: x86_64-randconfig-073-20250512 (https://download.01.org/0day-ci/archive/20250513/202505131314.ozIwFdR4-lkp@intel.com/config)
compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247)
rustc: rustc 1.78.0 (9b00956e5 2024-04-29)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250513/202505131314.ozIwFdR4-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/202505131314.ozIwFdR4-lkp@intel.com/

All errors (new ones prefixed by >>):

>> error[E0425]: cannot find function `inb` in crate `bindings`
   --> rust/kernel/io.rs:481:26
   |
   481 |         read8_unchecked, inb, write8_unchecked, outb, u8;
   |                          ^^^ not found in `bindings`
--
>> error[E0425]: cannot find function `outb` in crate `bindings`
   --> rust/kernel/io.rs:481:49
   |
   481 |         read8_unchecked, inb, write8_unchecked, outb, u8;
   |                                                 ^^^^ not found in `bindings`
--
>> error[E0425]: cannot find function `inw` in crate `bindings`
   --> rust/kernel/io.rs:482:27
   |
   482 |         read16_unchecked, inw, write16_unchecked, outw, u16;
   |                           ^^^ not found in `bindings`
--
>> error[E0425]: cannot find function `outw` in crate `bindings`
   --> rust/kernel/io.rs:482:51
   |
   482 |         read16_unchecked, inw, write16_unchecked, outw, u16;
   |                                                   ^^^^ not found in `bindings`
--
>> error[E0425]: cannot find function `inl` in crate `bindings`
   --> rust/kernel/io.rs:483:27
   |
   483 |         read32_unchecked, inl, write32_unchecked, outl, u32;
   |                           ^^^ not found in `bindings`
--
>> error[E0425]: cannot find function `outl` in crate `bindings`
   --> rust/kernel/io.rs:483:51
   |
   483 |         read32_unchecked, inl, write32_unchecked, outl, u32;
   |                                                   ^^^^ not found in `bindings`

-- 
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https://github.com/intel/lkp-tests/wiki