freescale: ls1046aqds: drop ifdef CONFIG_SYS_I2C

- Drop ifdef CONFIG_SYS_I2C to initialize
  baudrate of i2c

- Drop warning of i2c_early_init_f as follows,
  warning: implicit declaration of function 'i2c_early_init_f'; did you
  mean 'arch_early_init_r'? [-Wimplicit-function-declaration]

Signed-off-by: Biwen Li <biwen.li@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

board/freescale/ls1046aqds/ls1046aqds.c

@@ -35,6 +35,10 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#ifdef CONFIG_SYS_I2C_EARLY_INIT
+void i2c_early_init_f(void);
+#endif
+
 #ifdef CONFIG_TFABOOT
 struct ifc_regs ifc_cfg_nor_boot[CONFIG_SYS_FSL_IFC_BANK_COUNT] = {
 	{
@@ -337,10 +341,8 @@ int board_early_init_f(void)
 	 */
 	out_le32(cntcr, 0x1);
 
-#ifdef CONFIG_SYS_I2C
 #ifdef CONFIG_SYS_I2C_EARLY_INIT
 	i2c_early_init_f();
-#endif
 #endif
 	fsl_lsch2_early_init_f();