gitlab-ci: workaround for OOM in buildman

Signed-off-by: Stefano Babic <sbabic@denx.de>
47 jobs for master-next in 72 minutes and 4 seconds (queued for 5 seconds)
Status Name Job ID Coverage
  Testsuites
passed Build envtools #337613

00:00:25

passed Build tools-only #337612

00:00:11

passed Check for configs without MAINTAINERS entry #337611

00:00:10

passed cppcheck #337607

00:00:24

passed grep TODO/FIXME/HACK #337608

00:00:31

passed htmldocs #337609

00:01:30

passed Run binman, buildman, dtoc, Kconfig and patman testsuites #337614

00:01:22

passed Run tests for Nokia RX-51 (aka N900) #337615

00:02:38

passed sloccount #337610

00:00:25

 
  Test.Py
passed evb-ast2500 test.py #337620

00:01:22

passed integratorcp_cm926ejs test.py #337623

00:01:13

passed qemu_arm64 test.py #337625

00:01:56

passed qemu_arm test.py #337624

00:01:13

passed qemu_malta64el test.py #337629

00:00:31

passed qemu_malta64 test.py #337628

00:00:31

passed qemu_maltael test.py #337627

00:00:32

passed qemu_malta test.py #337626

00:01:14

passed qemu-ppce500 test.py #337630

00:01:15

passed qemu-riscv32_spl test.py #337633

00:01:25

passed qemu-riscv32 test.py #337631

00:01:39

passed qemu-riscv64_spl test.py #337634

00:00:38

passed qemu-riscv64 test.py #337632

00:00:54

passed qemu-x86_64 test.py #337636

00:01:06

passed qemu-x86 test.py #337635

00:01:55

passed r2dplus_i82557c test.py #337637

00:01:20

passed r2dplus_pcnet test.py #337638

00:00:31

passed r2dplus_rtl8139 test.py #337639

00:00:52

passed r2dplus_tulip test.py #337640

00:00:34

passed sandbox_flattree test.py #337621

00:01:36

passed sandbox_noinst_test.py #337619

00:01:49

passed sandbox_spl test.py #337618

00:01:39

passed sandbox test.py #337616

00:03:45

passed sandbox with clang test.py #337617

00:09:29

passed sifive_unleashed_sdcard test.py #337641

00:01:32

passed sifive_unleashed_spi-nor test.py #337642

00:01:32

passed vexpress_ca9x4 test.py #337622

00:01:09

passed xilinx_versal_virt test.py #337644

00:00:53

passed xilinx_zynq_virt test.py #337643

00:00:35

passed xtfpga test.py #337645

00:00:30

 
  World Build
passed build all 32bit ARM platforms #337646

00:39:41

canceled build all 64bit ARM platforms but imx8 #337784

00:17:22

passed build all other platforms #337651

00:02:49

passed build all PowerPC platforms #337650

00:02:21

canceled build imx8 but not imx8mn_beacon #337785

passed build imx8mn_beacon #337649

00:00:19

failed build all 64bit ARM platforms but imx8 #337647

00:17:02

failed build imx8 but not imx8mn_beacon #337648

00:13:21