soc: qcom: llc-slice: Add missing MODULE_LICENSE()

Add missing MODULE_LICENSE().
According to the SPDX-License-Identifier, the license is GPL v2.

Fixes the following warning:
WARNING: modpost: missing MODULE_LICENSE() in drivers/soc/qcom/llcc-slice.o

Fixes: a3134fb0 ("drivers: soc: Add LLCC driver")
Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

drivers/soc/qcom/llcc-slice.c

@@ -9,6 +9,7 @@
 #include <linux/device.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/of_device.h>
 #include <linux/regmap.h>
@@ -333,3 +334,5 @@ int qcom_llcc_probe(struct platform_device *pdev,
 	return qcom_llcc_cfg_program(pdev);
 }
 EXPORT_SYMBOL_GPL(qcom_llcc_probe);
+
+MODULE_LICENSE("GPL v2");