mips: netlogic: fix kernel-doc complaints in fmn-config.c

mips: netlogic: fix kernel-doc complaints in fmn-config.c

Clean up kernel-doc warnings in netlogic/xlr/fmn-config.c by using
correct kernel-doc format. Fixes these warnings:

arch/mips/netlogic/xlr/fmn-config.c:106: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
    * Configure bucket size and credits for a device. 'size' is the size of
arch/mips/netlogic/xlr/fmn-config.c:181: warning: expecting prototype for Setup the FMN details for each devices according to the device available(). Prototype was for xlr_board_info_setup() instead

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Ganesan Ramalingam <ganesanr@broadcom.com>
Cc: John Crispin <blogic@openwrt.org>
Cc: Aditya Srivastava <yashsri421@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>