soc/intel/common/fast_spi: implement spi_flash_ctrlr_protect_region()

In the fast spi support implement the callback for flash_protect().
This removes the need for having SOC_INTEL_COMMON_SPI_FLASH_PROTECT
Kconfig option as well spi_flash_get_fpr_info() and separate
spi_flash.[ch].

BUG=b:69614064

Change-Id: Iaf3b599a13a756262d3f36bae60de4f7fd00e7dc
Signed-off-by: Aaron Durbn <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/22881
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>

src/soc/intel/common/Kconfig

@@ -12,10 +12,6 @@ config CACHE_MRC_SETTINGS
 	bool "Save cached MRC settings"
 	default n
 
-config SOC_INTEL_COMMON_SPI_FLASH_PROTECT
-	bool
-	default n
-
 if CACHE_MRC_SETTINGS
 
 config MRC_SETTINGS_CACHE_BASE