make: Force --no-print-directories
make: Force --no-print-directories

Before this fix, some sub-make invocations did not use
the --no-print-directories and some did. So, you would
still see the build output contaminated by make's
"Entering directory .../ec" and "Leaving directory .../ec"
messages. They are pretty much useless, since they all
mention the same ec directory.

This fix
* once and for all, kills all of those messages.
* simplifies the make file by removing the need to specify the flag
* cleans up the build output by removing the specified flag

BRANCH=none
BUG=none
TEST=make buildall -j
     # Ensure that no "Entering dir ..." or "Leaving dir ..."
     # messages were emitted.

Signed-off-by: Craig Hesling <383db090fd8ef907a606ac8a9eccd2962bc489cf@chromium.org>
Change-Id: I5cd7ac8fd2fcf1cde3b03485c17f5fd6969ee7aa
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2132615
Reviewed-by: Jett Rink <9d4aef0593e6843318d99df31597fb6153b89787@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec