staging: rtl8723bs: include: Fix use of tabs for indent in rtw_security.h

This change ensures that the code is properly indented and easy to follow.

Reported by `checkpatch.pl`:
WARNING: please, use tabs instead of spaces for indentation.
Signed-off-by: Sayyad Abid <sayyad.abid16@gmail.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/20240912040409.3315067-5-sayyad.abid16@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/include/rtw_security.h

@@ -75,8 +75,8 @@ struct {
 };
 
 union Keytype {
-        u8   skey[16];
-        u32    lkey[4];
+	u8   skey[16];
+	u32    lkey[4];
 };