soc: qcom: Add SoC info driver

This is patchset v7 which takes care of review comments received for patchset v6.

Major changes with respect to patch v6 are as below:
- Rather than showing string for h/w types, just show the number obtained from SMEM. The reader of this number is supposed to parse this into a human readable string as this information may be different for different ODMs
- Create an attribute 'qcom_odm' depending on the presence of corresponding property in SMEM DT entry. This information can be used for ODM specific interpretation of SMEM socinfo content
- Read machine value from DT, rather than using soc-id as index in an ever increasing array of machine names

Imran Khan (2):
soc: qcom: Add SoC info driver
Documentation/ABI: Add ABI information for QCOM socinfo driver

 Documentation/ABI/stable/sysfs-driver-qcom_socinfo | 147 ++++++
 drivers/soc/qcom/Kconfig                           |   1 +
 drivers/soc/qcom/Makefile                          |   3 +-
 drivers/soc/qcom/smem.c                            |   5 +
 drivers/soc/qcom/socinfo.c                         | 514 +++++++++++++++++++++
 5 files changed, 669 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/ABI/stable/sysfs-driver-qcom_socinfo
 create mode 100644 drivers/soc/qcom/socinfo.c

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