meson: Fix perfetto include directories

Fix an issue with old versions of meson which complain about using
strings when an include directory object is expected.

Signed-off-by: Antonio Caggiano <antonio.caggiano@collabora.com>
Reviewed-by: Rohan Garg <rohan.garg@collabora.com>
3 jobs for fix-meson in 1 minute and 48 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Check
passed #5336277
clang-format

00:00:18

 
  Build
passed #5336279
aarch64
aarch64

00:01:28

passed #5336278
kvm
x86_64

00:00:42