soc: qcom: bring all qcom drivers into a submenu

As the number of qcom drivers increase, entries in SOC menu looks
scattered with other SOC drivers. Make a submenu for Qcom drivers
to make it visibly clear while selecting qcom SOC specific drivers.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

drivers/soc/qcom/Kconfig

 #
 # QCOM Soc drivers
 #
+menu "Qualcomm SoC drivers"
+
 config QCOM_GSBI
         tristate "QCOM General Serial Bus Interface"
         depends on ARCH_QCOM
@@ -74,3 +76,5 @@ config QCOM_WCNSS_CTRL
 	help
 	  Client driver for the WCNSS_CTRL SMD channel, used to download nv
 	  firmware to a newly booted WCNSS chip.
+
+endmenu