kbuild, clk: remove MODULE_LICENSE in non-modules

Since commit 8b41fc4454e ("kbuild: create modules.builtin without
Makefile.modbuiltin or tristate.conf"), MODULE_LICENSE declarations
are used to identify modules. As a consequence, uses of the macro
in non-modules will cause modprobe to misidentify their containing
object file as a module when it is not (false positives), and modprobe
might succeed rather than failing with a suitable error message.

So remove it in the files in this commit, none of which can be built as
modules.

Signed-off-by: Nick Alcock <[e-mail]>
Suggested-by: Luis Chamberlain <[e-mail]>
Cc: Luis Chamberlain <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Cc: Hitomi Hasegawa <[e-mail]>
Cc: Michael Turquette <[e-mail]>
Cc: Stephen Boyd <[e-mail]>
Cc: [e-mail]
Link: https://lore.kernel.org/r/[e-mail]
Acked-by: Conor Dooley <[e-mail]>
Reviewed-by: Conor Dooley <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/clk-fixed-mmio.c

···
 
 MODULE_AUTHOR("Jan Kotas <[e-mail]>");
 MODULE_DESCRIPTION("Memory Mapped IO Fixed clock driver");
-MODULE_LICENSE("GPL v2");

drivers/clk/clk-fsl-sai.c

···
 
 MODULE_DESCRIPTION("Freescale SAI bitclock-as-a-clock driver");
 MODULE_AUTHOR("Michael Walle <[e-mail]>");
-MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:fsl-sai-clk");

drivers/clk/hisilicon/clk-hi3559a.c

···
 module_exit(hi3559av100_crg_exit);
 
 
-MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("HiSilicon Hi3559AV100 CRG Driver");

drivers/clk/microchip/clk-mpfs-ccc.c

···
 
 MODULE_DESCRIPTION("Microchip PolarFire SoC Clock Conditioning Circuitry Driver");
 MODULE_AUTHOR("Conor Dooley <[e-mail]>");
-MODULE_LICENSE("GPL");