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>

board/samsung/arndale/arndale.c

@@ -112,10 +112,10 @@ int checkboard(void)
 }
 #endif
 
-#ifdef CONFIG_S5P_PA_SYSRAM
+#ifdef CONFIG_SMP_PEN_ADDR
 void smp_set_core_boot_addr(unsigned long addr, int corenr)
 {
-	writel(addr, CONFIG_S5P_PA_SYSRAM);
+	writel(addr, CONFIG_SMP_PEN_ADDR);
 
 	/* make sure this write is really executed */
 	__asm__ volatile ("dsb\n");