clk: sophgo: add missing MODULE_DESCRIPTION() macro

make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/clk/sophgo/clk-sophgo-cv1800.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240601-md-drivers-clk-sophgo-clk-sophgo-cv1800-v1-1-8e00d8c3a87b@quicinc.com


Signed-off-by: Stephen Boyd <sboyd@kernel.org>