hal-backend-power: Replace prefix from 'pass' to 'hal_power'

Replace prefix of structure from 'pass' to 'hal_power'.
This is because the structure of hal-api-power name prefix is changed
from pass to hal_power.

Change-Id: Ic0ac1601273cb4d3305e423c0c73e2bcbfee9ff2
Signed-off-by: Unsung Lee <unsung.lee@samsung.com>

Replace deprecated abi_version with major/minor_version

Change-Id: I9934e86c6f169b8f857d3c0edeb58bcd7883571c
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

Use hal-rootstrap package for build and change hal_backend_power_funcs memory allocation/free

hal-roostrap package contains the allowed and maintained files
to build hal-backend package. In order to keep ABI (Application Binary
Interface) compatibility between platfrom and hal image,
must use only hal-rootstrap pacakge for build.

And chagnge the memory allocation/free way of hal_backend_power_funcs
in order to support new 1-platform Multi-HAL Interface approach.

Change-Id: Ib4d03086837a167b06a207d4d25d474a7916fac5
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

power-generic: Add read permission for others group

Change-Id: I2b545063cf05b1ec7424e15a6f870be55bfb8d1b
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

power-generic: Add helper function to get_value and set_value

Almost functions were implemented similarly. It means that
it is possible to be replaced with the some helper function.

When using the following get_value and set_value functions,
reduce the duplicate code and simplify the operaiont of getting/setting
value from the specific file path.

[Added function description]
- int get_value_string(char *prefix, char *res_name, char *suffix, char *buf)
- int set_value_string(char *prefix, char *res_name, char *suffix, char *buf)
- int get_value_integer(char *prefix, char *res_name, char *suffix, int *value)
- int set_value_integer(char *prefix, char *res_name, char *suffix, int value)
- int get_path(char *path, char *prefix, char *res_name, char *suffix)

Change-Id: I4031d39a1440b51caad8acaa51184c6ccbb69ecb
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>

power-generic: Fix cmakefile

Change-Id: I3dd92c292b5e44d4f7bb995ce597a85c776aab65
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

power-generic: Add hal-backend-power-generic hal backend

Change-Id: I80578a371af061bd125102a814094f6dafaf4bf5
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

Initial empty repository