sysdeps/managarm: setitimer + CLOCK_BOOTTIME #4276

Job	Run time
Build mlibc (x86_64, mlibc, gcc)	3m 43s
Compile sysdeps (dripos)	2m 42s
Build mlibc (x86_64, mlibc-static, gcc)	3m 10s
Build mlibc (x86_64, mlibc-shared, gcc)	3m 7s
Compile sysdeps (lemon)	2m 18s
Build mlibc (x86_64, mlibc-ansi-only, gcc)	3m 4s
Compile sysdeps (aero)	2m 24s
Compile sysdeps (ironclad)	2m 19s
Build mlibc (x86_64, mlibc-headers-only, gcc)	2m 4s
Compile sysdeps (lyre)	2m 23s
Build mlibc (riscv64, mlibc, gcc)	3m 54s
Compile sysdeps (keyronex)	2m 29s
Build mlibc (riscv64, mlibc-static, gcc)	4m 48s
Compile sysdeps (managarm)	2m 38s
Build mlibc (riscv64, mlibc-shared, gcc)	3m 16s
Compile sysdeps (vinix)	2m 23s
Build mlibc (riscv64, mlibc-ansi-only, gcc)	3m 6s
Compile sysdeps (astral)	2m 21s
Build mlibc (riscv64, mlibc-headers-only, gcc)	2m 30s
Build mlibc (aarch64, mlibc, gcc)	5m 37s
Build mlibc (aarch64, mlibc-static, gcc)	3m 46s
Build mlibc (aarch64, mlibc-shared, gcc)	3m 33s
Build mlibc (aarch64, mlibc-ansi-only, gcc)	3m 10s
Build mlibc (aarch64, mlibc-headers-only, gcc)	2m 28s
Build mlibc (x86, mlibc, gcc)	3m 57s
Build mlibc (x86, mlibc-static, gcc)	3m 26s
Build mlibc (x86, mlibc-shared, gcc)	3m 11s
Build mlibc (x86, mlibc-ansi-only, gcc)	3m 10s
Build mlibc (x86, mlibc-headers-only, gcc)	2m 28s
Build mlibc (m68k, mlibc, gcc)	3m 40s
Build mlibc (m68k, mlibc-static, gcc)	3m 10s
Build mlibc (m68k, mlibc-shared, gcc)	3m 5s
Build mlibc (m68k, mlibc-ansi-only, gcc)	2m 55s
Build mlibc (m68k, mlibc-headers-only, gcc)	2m 22s
Build mlibc (x86_64, mlibc, clang)	3m 25s
	1h 48m 2s

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