Import and build error with platform_i2c_test_for_efm8_ioexpander

[silabs-Ruibin]

Project name: platform_i2c_test_for_efm8_ioexpander

Environment setup:
OS: Windows 10
IDE: Simplicity Studio V4, version 4.1.14.0
SDK: v2.7.10

Issues:
1.Wrong default toolchain when importing. Toolchain default to GNU ARM v4.9.3

2.Missing includes:
a. ${StudioSdkPath}/app/esf_common/template/studio/$(pathVar_HALCONFIG)/inc/hal-config
b. ${StudioSdkPath}/protocol/stack
c. ${StudioSdkPath}/protocol/flex/util
d. ${StudioSdkPath}/platform/Device/SiliconLabs-Restricted/EFR32MG12P/Include
3. Build errors:
a. cli.h: No such file or directory
b. gpio.h: No such file or directory
c. ioexp_drv.h: No such file or directory

After fixing the header errors, those additional errors show up:
d. undefined reference to "RAIL_ConfigPti"
e. undefined reference to "RAIL_GetTime"
f. undefined reference to "RAIL_Init"
i. undefined reference to "RAIL_UseDma"