Add __aligned(x) and __packed macros to GCC toolchain
Add __aligned(x) and __packed macros to GCC toolchain

The names "__aligned(x)" and "__packed" are more generic than ALIGN_STRUCT(x)
and PACK_STRUCT respectively and are to be used in their stead.

NOTE: ALIGN_STRUCT(x) and PACK_STRUCT are now considered obsolete.

Change-Id: Ic5e859092643dde53bb8fa1117c6d877c2c4296f
Signed-off-by: Peter Mitsis <22bf95476f8cdbda3c8a9a9bf1bdda876f69ea7a@windriver.com>

tidyjiang8/zephyr-doc,GiulianoFranchetto/zephyr,bboozzoo/zephyr,aceofall/zephyr-iotos,kraj/zephyr,ldts/zephyr,erwango/zephyr,ldts/zephyr,bboozzoo/zephyr,Vudentz/zephyr,aceofall/zephyr-iotos,mbolivar/zephyr,fractalclone/zephyr-riscv,mirzak/zephyr-os,tidyjiang8/zephyr-doc,GiulianoFranchetto/zephyr,jamesonwilliams/zephyr-kernel,kraj/zephyr,kraj/zephyr,sharronliu/zephyr,aceofall/zephyr-iotos,Vudentz/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,explora26/zephyr,fractalclone/zephyr-riscv,GiulianoFranchetto/zephyr,ldts/zephyr,galak/zephyr,runchip/zephyr-cc3200,galak/zephyr,zephyrproject-rtos/zephyr,fbsder/zephyr,runchip/zephyr-cc3200,mirzak/zephyr-os,jamesonwilliams/zephyr-kernel,runchip/zephyr-cc3220,mbolivar/zephyr,holtmann/zephyr,mirzak/zephyr-os,sharronliu/zephyr,bigdinotech/zephyr,galak/zephyr,32bitmicro/zephyr,32bitmicro/zephyr,runchip/zephyr-cc3200,explora26/zephyr,fractalclone/zephyr-riscv,punitvara/zephyr,tidyjiang8/zephyr-doc,holtmann/zephyr,holtmann/zephyr,jamesonwilliams/zephyr-kernel,jamesonwilliams/zephyr-kernel,aceofall/zephyr-iotos,nashif/zephyr,runchip/zephyr-cc3200,32bitmicro/zephyr,aceofall/zephyr-iotos,mbolivar/zephyr,pklazy/zephyr,finikorg/zephyr,holtmann/zephyr,rsalveti/zephyr,Vudentz/zephyr,erwango/zephyr,erwango/zephyr,fbsder/zephyr,Vudentz/zephyr,pklazy/zephyr,explora26/zephyr,pklazy/zephyr,Vudentz/zephyr,runchip/zephyr-cc3220,zephyrproject-rtos/zephyr,erwango/zephyr,bboozzoo/zephyr,coldnew/zephyr-project-fork,pklazy/zephyr,bigdinotech/zephyr,mirzak/zephyr-os,bigdinotech/zephyr,runchip/zephyr-cc3220,punitvara/zephyr,zephyriot/zephyr,rsalveti/zephyr,coldnew/zephyr-project-fork,nashif/zephyr,finikorg/zephyr,runchip/zephyr-cc3200,fbsder/zephyr,kraj/zephyr,fractalclone/zephyr-riscv,rsalveti/zephyr,coldnew/zephyr-project-fork,zephyrproject-rtos/zephyr,bboozzoo/zephyr,sharronliu/zephyr,rsalveti/zephyr,zephyriot/zephyr,sharronliu/zephyr,runchip/zephyr-cc3220,bigdinotech/zephyr,Vudentz/zephyr,galak/zephyr,nashif/zephyr,mirzak/zephyr-os,zephyriot/zephyr,jamesonwilliams/zephyr-kernel,coldnew/zephyr-project-fork,GiulianoFranchetto/zephyr,mbolivar/zephyr,bigdinotech/zephyr,sharronliu/zephyr,explora26/zephyr,GiulianoFranchetto/zephyr,ldts/zephyr,bboozzoo/zephyr,zephyriot/zephyr,finikorg/zephyr,zephyriot/zephyr,zephyrproject-rtos/zephyr,fractalclone/zephyr-riscv,explora26/zephyr,galak/zephyr,32bitmicro/zephyr,fbsder/zephyr,kraj/zephyr,32bitmicro/zephyr,coldnew/zephyr-project-fork,fbsder/zephyr,runchip/zephyr-cc3220,punitvara/zephyr,tidyjiang8/zephyr-doc,ldts/zephyr,mbolivar/zephyr,erwango/zephyr,rsalveti/zephyr,finikorg/zephyr,finikorg/zephyr,tidyjiang8/zephyr-doc,punitvara/zephyr,pklazy/zephyr,punitvara/zephyr,holtmann/zephyr,nashif/zephyr