clang: Allow initializer overrides

In the code we do the following in a number of places
to pre-initialize an array with a certain value before
overwriting some of the array with other values:

 u8 mainboard_picr_data[FCH_INT_TABLE_SIZE] = {
    [0 ... FCH_INT_TABLE_SIZE-1] = 0x1F,
 }

clang does not like that behavior unless we specify
the option -Wno-initializer-overrides.

Remove the check for gcc in those places, too, because
 1) it would silently change array contents between compilers
 2) the check isn't sufficient to determine compilation on
    clang vs gcc

Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Change-Id: I93cc121b6fec099fcdbd5fd1114c2ff7cbc291dc
Reviewed-on: https://review.coreboot.org/20384
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
3 files changed