busybox: added linux-pam support

Signed-off-by: Matt Weber <matthew.weber@rockwellcollins.com>
Reviewed-by: Samuel Martin <s.martin49@gmail.com>

package/busybox/busybox.mk

@@ -152,6 +152,13 @@ define BUSYBOX_INSTALL_WATCHDOG_SCRIPT
 endef
 endif
 
+ifeq ($(BR2_PACKAGE_LINUX_PAM),y)
+define BUSYBOX_LINUX_PAM
+	$(call KCONFIG_ENABLE_OPT,CONFIG_PAM,$(BUSYBOX_BUILD_CONFIG))
+endef
+BUSYBOX_DEPENDENCIES += linux-pam
+endif
+
 # Enable "noclobber" in install.sh, to prevent BusyBox from overwriting any
 # full-blown versions of apps installed by other packages with sym/hard links.
 define BUSYBOX_NOCLOBBER_INSTALL
@@ -165,6 +172,7 @@ define BUSYBOX_KCONFIG_FIXUP_CMDS
 	$(BUSYBOX_PREFER_STATIC)
 	$(BUSYBOX_SET_MDEV)
 	$(BUSYBOX_SET_CRYPT_SHA)
+	$(BUSYBOX_LINUX_PAM)
 	$(BUSYBOX_INTERNAL_SHADOW_PASSWORDS)
 	$(BUSYBOX_SET_INIT)
 	$(BUSYBOX_SET_WATCHDOG)