Put in a temporary workaround for strange array access in if_fxp.c.

sys/conf/files

@@ -1792,7 +1792,8 @@ dev/flash/cqspi.c		optional cqspi fdt xdma
 dev/flash/mx25l.c		optional mx25l
 dev/flash/n25q.c		optional n25q fdt
 dev/flash/qspi_if.m		optional cqspi fdt | n25q fdt
-dev/fxp/if_fxp.c		optional fxp
+dev/fxp/if_fxp.c		optional fxp \
+	compile-with "${NORMAL_C} ${NO_WARRAY_BOUNDS}"
 dev/fxp/inphy.c			optional fxp
 dev/gem/if_gem.c		optional gem
 dev/gem/if_gem_pci.c		optional gem pci

sys/conf/kern.mk

@@ -25,6 +25,7 @@ NO_WUNNEEDED_INTERNAL_DECL=	-Wno-error-unneeded-internal-declaration
 NO_WSOMETIMES_UNINITIALIZED=	-Wno-error-sometimes-uninitialized
 NO_WCAST_QUAL=			-Wno-error-cast-qual
 NO_WTAUTOLOGICAL_POINTER_COMPARE= -Wno-tautological-pointer-compare
+NO_WARRAY_BOUNDS=		-Wno-error-array-bounds
 # Several other warnings which might be useful in some cases, but not severe
 # enough to error out the whole kernel build.  Display them anyway, so there is
 # some incentive to fix them eventually.

sys/modules/fxp/Makefile

@@ -6,3 +6,5 @@ KMOD=	if_fxp
 SRCS=	device_if.h bus_if.h if_fxp.c inphy.c miibus_if.h miidevs.h pci_if.h
 
 .include <bsd.kmod.mk>
+
+CWARNFLAGS+=	${NO_WARRAY_BOUNDS}