crypto: xilinx - add missing MODULE_DESCRIPTION() macro

make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/crypto/xilinx/zynqmp-aes-gcm.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Reviewed-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/xilinx/zynqmp-aes-gcm.c

@@ -446,4 +446,5 @@ static struct platform_driver zynqmp_aes_driver = {
 };
 
 module_platform_driver(zynqmp_aes_driver);
+MODULE_DESCRIPTION("Xilinx ZynqMP AES Driver");
 MODULE_LICENSE("GPL");