phy: qcom-ufs: add MODULE_LICENSE tag

While the specific UFS PHY drivers (14nm and 20nm) have a module
license, the common base module does not, leading to a Kbuild
failure:

WARNING: modpost: missing MODULE_LICENSE() in drivers/phy/qualcomm/phy-qcom-ufs.o
FATAL: modpost: GPL-incompatible module phy-qcom-ufs.ko uses GPL-only symbol 'clk_enable'

This adds a module description and license tag to fix the build.
I added both Yaniv and Vivek as authors here, as Yaniv sent the initial
submission, while Vivek did most of the work since.

Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Bjorn Andersson <[email protected]>
Signed-off-by: Kishon Vijay Abraham I <[email protected]>

Author: arndb

drivers/phy/qualcomm/phy-qcom-ufs.c

@@ -675,3 +675,8 @@ int ufs_qcom_phy_power_off(struct phy *generic_phy)
 	return 0;
 }
 EXPORT_SYMBOL_GPL(ufs_qcom_phy_power_off);
+
+MODULE_AUTHOR("Yaniv Gardi <[email protected]>");
+MODULE_AUTHOR("Vivek Gautam <[email protected]>");
+MODULE_DESCRIPTION("Universal Flash Storage (UFS) QCOM PHY");
+MODULE_LICENSE("GPL v2");