Kconfig: Drop the C_ENVIRONMENT_BOOTBLOCK symbol

The romcc bootblock will be deprecated soon and most platforms use
C_ENVIRONMENT_BOOTBLOCK already. This patch drops the
CONFIG_C_ENVIRONMENT_BOOTBLOCK symbol and adds CONFIG_ROMCC_BOOTBLOCK
where needed.

Change-Id: I773a76aade623303b7cd95ebe9b0411e5a7ecbaf
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37154
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Michał Żygowski <michal.zygowski@3mdeb.com>

src/soc/intel/quark/Kconfig

@@ -26,7 +26,6 @@ config CPU_SPECIFIC_OPTIONS
 	select ARCH_RAMSTAGE_X86_32
 	select ARCH_ROMSTAGE_X86_32
 	select ARCH_VERSTAGE_X86_32
-	select C_ENVIRONMENT_BOOTBLOCK
 	select NO_MMCONF_SUPPORT
 	select REG_SCRIPT
 	select PLATFORM_USES_FSP2_0
@@ -226,11 +225,6 @@ config RMU_LOC
 	  The location in CBFS that the RMU is located. It must match the
 	  strap-determined base address.
 
-#####
-# Bootblock
-#     The following options support the C_ENVIRONMENT_BOOTBLOCK.
-#####
-
 config DCACHE_BSP_STACK_SIZE
 	hex
 	default 0x4000