iwlwifi: mvm: fix old-style static const declaration

GCC reports warning as follows:

drivers/net/wireless/intel/iwlwifi/mvm/rfi.c:14:1: warning:
 'static' is not at beginning of declaration [-Wold-style-declaration]
   14 | const static struct iwl_rfi_lut_entry iwl_rfi_table[IWL_RFI_LUT_SIZE] = {
      | ^~~~~

Move static to the beginning of declaration.

Fixes: 21254908 ("iwlwifi: mvm: add RFI-M support")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210802172232.f60b39bbb0c0.I8b0ad9105003d13cc4aa64fc957aec9582e8b26d@changeid


Signed-off-by: Luca Coelho <luciano.coelho@intel.com>