spi: Allow separate control of SPI_FLASH_TINY for SPL/TPL

In some cases SPL needs to be able to erase but TPL just needs to read.
Allow these to have separate settings for SPI_FLASH_TINY.
Signed-off-by: NSimon Glass <sjg@chromium.org>

common/spl/Kconfig

@@ -1529,6 +1529,16 @@ config TPL_SPI_FLASH_SUPPORT
 	  Enable support for using SPI flash in TPL. See SPL_SPI_FLASH_SUPPORT
 	  for details.
 
+config TPL_SPI_FLASH_TINY
+	bool "Enable low footprint TPL SPI Flash support"
+	depends on TPL_SPI_FLASH_SUPPORT && !SPI_FLASH_BAR
+	default y if SPI_FLASH
+	help
+	 Enable lightweight TPL SPI Flash support that supports just reading
+	 data/images from flash. No support to write/erase flash. Enable
+	 this if you have TPL size limitations and don't need full-fledged
+	 SPI flash support.
+
 config TPL_SPI_LOAD
 	bool "Support loading from SPI flash"
 	depends on TPL_SPI_FLASH_SUPPORT

drivers/mtd/spi/Makefile

@@ -8,7 +8,7 @@ spi-nor-y := sf_probe.o spi-nor-ids.o
 
 ifdef CONFIG_SPL_BUILD
 obj-$(CONFIG_SPL_SPI_BOOT)	+= fsl_espi_spl.o
-ifeq ($(CONFIG_SPL_SPI_FLASH_TINY),y)
+ifeq ($(CONFIG_$(SPL_TPL_)SPI_FLASH_TINY),y)
 spi-nor-y += spi-nor-tiny.o
 else
 spi-nor-y += spi-nor-core.o