clk: at91: sama7g5: remove all kernel-doc & kernel-doc warnings

Remove all "/**" kernel-doc markers from sama7g5.c since they are
all internal to this driver source file only.
This eliminates 14 warnings that were reported by the kernel test robot.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Claudiu Beznea <claudiu.beznea@microchip.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Eugen Hristev <eugen.hristev@microchip.com>
Cc: linux-clk@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20210819223237.20115-1-rdunlap@infradead.org


Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>