Build: Add sanity test config for GCC v11.2

Build and test config 'AN521_GCC_IPC_3_REG_Relwithdebinfo_BL2_NS'
with GCC v11.2 in release job.

Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
Change-Id: I3dc7888c402d52e4ceaff537c7f3c1d0e4b4e47d
1 file changed