bsps: Move make/custom/* files to bsps

Adjust various build files.  Remove automatic generation of the
c/src/lib/libbsp/*/acinclude.m4 files from bootstrap script.

This patch is a part of the BSP source reorganization.

Update #3285.

bsps/lm32/lm32_evr/config/lm32_evr.cfg

@@ -0,0 +1,29 @@
+#
+#  Config file for the lm32_evr BSP
+#
+
+# Choices for CPU_MODEL:
+#   tiny (no cache)
+#   standard (instruction cache)
+#   fast (instruction and data cache)
+
+RTEMS_CPU = lm32
+
+include $(RTEMS_ROOT)/make/custom/default.cfg
+
+#  This contains the compiler options necessary to select the CPU model
+#  and (hopefully) optimize for it.
+CPU_CFLAGS =
+
+# optimize flag: typically -O2
+# ATM, doesn't work with optimization levels > 0
+CFLAGS_OPTIMIZE_V = -O0 -g
+CFLAGS_OPTIMIZE_V += -ffunction-sections -fdata-sections
+
+LDFLAGS = -Wl,--gc-sections
+
+define bsp-post-link
+	$(OBJCOPY) -O binary --strip-all $(basename $@)$(EXEEXT) \
+	    -R entry -R exceptions $(basename $@)$(DOWNEXT)
+	$(default-bsp-post-link)
+endef