lib: compile mdelay for romstage

Mimicking change I7037308d2, always compile mdelay for romstage.
The boards that #included delay.c in the romstage now rely on the linker
instead, which is a desirable cleanup.

Change-Id: I7e5169ec94e5417536e967194e8eab67381e7c98
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/13115
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/lib/Makefile.inc

@@ -69,7 +69,7 @@ $(foreach arch,$(ARCH_SUPPORTED),\
 	    $(eval rmodules_$(arch)-y += rmodule.ld))
 
 romstage-y += fmap.c
-romstage-$(CONFIG_I2C_TPM) += delay.c
+romstage-y += delay.c
 romstage-y += cbfs.c
 romstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
 romstage-$(CONFIG_COMPRESS_RAMSTAGE) += lzma.c lzmadecode.c