arm: samsung: Migrate a number of symbols to Kconfig

- In a number of cases, use CONFIG_ARCH_EXYNOS[45] rather than
  CONFIG_EXYNOS[45]
- In other cases, test for CONFIG_ARCH_EXYNOS or CONFIG_ARCH_S5PC1XX
- Migrate specific SoC CONFIG values to Kconfig
- Use CONFIG_TARGET_x rather than CONFIG_x
- Migrate other CONFIG_EXYNOS_x symbols to Kconfig
- Reference CONFIG_EXYNOS_RELOCATE_CODE_BASE directly as EXYNOS_RELOCATE_CODE_BASE
- Rename CONFIG_S5P_PA_SYSRAM to CONFIG_SMP_PEN_ADDR to match the rest
  of U-Boot usage.

Cc: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/mach-exynos/lowlevel_init.c b/arch/arm/mach-exynos/lowlevel_init.c
index 2645a8f..1ff5fca 100644
--- a/arch/arm/mach-exynos/lowlevel_init.c
+++ b/arch/arm/mach-exynos/lowlevel_init.c
@@ -49,6 +49,10 @@
 };
 
 #ifdef CONFIG_EXYNOS5420
+
+/* Address for relocating helper code (Last 4 KB of IRAM) */
+#define EXYNOS_RELOCATE_CODE_BASE	(CONFIG_IRAM_TOP - 0x1000)
+
 /*
  * Power up secondary CPUs.
  */
@@ -56,7 +60,7 @@
 {
 	v7_enable_smp(EXYNOS5420_INFORM_BASE);
 	svc32_mode_en();
-	branch_bx(CONFIG_EXYNOS_RELOCATE_CODE_BASE);
+	branch_bx(EXYNOS_RELOCATE_CODE_BASE);
 }
 
 /*
@@ -153,7 +157,7 @@
 static void secondary_cores_configure(void)
 {
 	/* Clear secondary boot iRAM base */
-	writel(0x0, (CONFIG_EXYNOS_RELOCATE_CODE_BASE + 0x1C));
+	writel(0x0, (EXYNOS_RELOCATE_CODE_BASE + 0x1C));
 
 	/* set lowpower flag and address */
 	writel(CPU_RST_FLAG_VAL, CONFIG_LOWPOWER_FLAG);