lib: add delay.c to bootblock if I2C_TPM driver is enabled

Change-Id: I752fcc3b8687e4f861c3977322ebb6439f14fac4
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10708
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/lib/Makefile.inc

@@ -30,6 +30,7 @@ bootblock-$(CONFIG_GENERIC_UDELAY) += timer.c
 
 bootblock-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c
 bootblock-$(CONFIG_CONSOLE_CBMEM) += cbmem_console.c
+bootblock-$(CONFIG_I2C_TPM) += delay.c
 bootblock-y += memchr.c
 bootblock-y += memcmp.c
 bootblock-y += mem_pool.c