kbuild: Descend into SOC directory from CPU directory
Some CPUs of some architectures have SOC directories.
At present, the build system directly descends into SOC directories
from the top Makefile, but it should generally descend into each
directory from its parent directory.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/arch/avr32/cpu/Makefile b/arch/avr32/cpu/Makefile
index 5e11721..2f7adf8 100644
--- a/arch/avr32/cpu/Makefile
+++ b/arch/avr32/cpu/Makefile
@@ -16,3 +16,5 @@
obj-y += interrupts.o
obj-$(CONFIG_PORTMUX_PIO) += portmux-pio.o
obj-$(CONFIG_PORTMUX_GPIO) += portmux-gpio.o
+
+obj-y += $(if $(SOC),$(SOC)/)