Powerpc: T208xQDS: Modify the comment of the CONFIG_FSL_PCIE_RESET macro

Remove duplicate macro CONFIG_FSL_PCIE_RESET and update its comment.
It enables PCIe reset to fix link width 2x - 4x.

Signed-off-by: Bao Xiaowei <xiaowei.bao@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

include/configs/T208xQDS.h

@@ -534,7 +534,7 @@ unsigned long get_board_ddr_clk(void);
 #define CONFIG_PCIE2		/* PCIE controller 2 */
 #define CONFIG_PCIE3		/* PCIE controller 3 */
 #define CONFIG_PCIE4		/* PCIE controller 4 */
-#define CONFIG_FSL_PCIE_RESET
+#define CONFIG_FSL_PCIE_RESET   /* pcie reset fix link width 2x-4x*/
 #define CONFIG_FSL_PCI_INIT	/* Use common FSL init code */
 #define CONFIG_SYS_PCI_64BIT	/* enable 64-bit PCI resources */
 /* controller 1, direct to uli, tgtid 3, Base address 20000 */
@@ -578,7 +578,6 @@ unsigned long get_board_ddr_clk(void);
 
 #ifdef CONFIG_PCI
 #define CONFIG_PCI_INDIRECT_BRIDGE
-#define CONFIG_FSL_PCIE_RESET	   /* need PCIe reset errata */
 #define CONFIG_PCI_SCAN_SHOW	/* show pci devices on startup */
 #endif