util/inteltool: Fix building with musl libc

1. Make sure __always_inline is defined.
2. To test if we're on Linux, check presence of __linux__
   instead of __GLIBC__.

Change-Id: I2ccfc4d2ef4c60877e24508f9926b533cffec0ed
Signed-off-by: Evgeny Zinoviev <me@ch1p.io>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50412
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

0 files changed, 0 insertions, 0 deletions