onenand: Remove ONENAND_BOOT option

The option ONENAND_BOOT is never set, so remove it. The option
SYS_ONENAND_BOOT was never migrated to Kconfig and any platforms which
supported that have long been removed from the code, so remove the
reference there as well.

Signed-off-by: Tom Rini <trini@konsulko.com>

arch/arm/mach-omap2/omap3/lowlevel_init.S

@@ -176,10 +176,10 @@ ENTRY(lowlevel_init)
 	ldr	sp, SRAM_STACK
 	str	ip, [sp]	/* stash ip register */
 	mov	ip, lr		/* save link reg across call */
-#if !defined(CONFIG_SYS_NAND_BOOT) && !defined(CONFIG_SYS_ONENAND_BOOT)
+#if !defined(CONFIG_SYS_NAND_BOOT)
 /*
  * No need to copy/exec the clock code - DPLL adjust already done
- * in NAND/oneNAND Boot.
+ * in NAND Boot.
  */
 	ldr	r1, =SRAM_CLK_CODE
 	bl	cpy_clk_code

boot/Kconfig

@@ -1436,14 +1436,6 @@ config NAND_BOOT
 	  booted via NAND flash. This is not a must, some SoCs need this,
 	  some not.
 
-config ONENAND_BOOT
-	bool "Support for booting from ONENAND"
-	imply MTD_RAW_NAND
-	help
-	  Enabling this will make a U-Boot binary that is capable of being
-	  booted via ONENAND. This is not a must, some SoCs need this,
-	  some not.
-
 config QSPI_BOOT
 	bool "Support for booting from QSPI flash"
 	help