use bash for kernel stuff

mk/kernel-vars.mk

@@ -5,7 +5,8 @@ KERNEL_MAKE_OPTS:=	-C "${LINUX_DIR}" V=1
 ifneq ($(ADK_NATIVE),y)
 KERNEL_MAKE_OPTS+=	CROSS_COMPILE="$(TARGET_CROSS)" ARCH=$(ARCH) \
 			CC="$(TARGET_CC)" HOSTCC="${CC_FOR_BUILD}" \
-			HOSTCFLAGS='${CFLAGS_FOR_BUILD}'
+			HOSTCFLAGS='${CFLAGS_FOR_BUILD}' \
+			CONFIG_SHELL='${SHELL}'
 endif
 ifeq (${ADK_TARGET_BROADCOM_MODEL_LINKSYS_WRT54G},y)
 ADK_KCPPFLAGS+=		-DBCM47XX_OVERRIDE_FLASHSIZE=0x400000 \
@@ -23,4 +24,5 @@ ADK_KCPPFLAGS+=		-DBCM47XX_OVERRIDE_FLASHSIZE=0x800000 \
 			-DBCM47XX_OVERRIDE_CFESIZE=0x40000
 endif
 
-KERNEL_MAKE_ENV+=	KCPPFLAGS='${ADK_KCPPFLAGS}' PATH="${TOOLS_DIR}:$$PATH"
+KERNEL_MAKE_ENV+=	KCPPFLAGS='${ADK_KCPPFLAGS}' \
+			PATH="${TOOLS_DIR}:$$PATH"