imx: Use a clear identification of an unidentified CPU type

In case an unidentified CPU type is detected it now returns
i.MX??, in a const char.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Cc: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>

diff --git a/arch/arm/cpu/armv7/imx-common/cpu.c b/arch/arm/cpu/armv7/imx-common/cpu.c
index b3195dd..e7bd0bf 100644 (file)
--- a/arch/arm/cpu/armv7/imx-common/cpu.c
+++ b/arch/arm/cpu/armv7/imx-common/cpu.c
@@ -66,7 +66,7 @@ char *get_reset_cause(void)
 
 #if defined(CONFIG_DISPLAY_CPUINFO)
 
-static char *get_imx_type(u32 imxtype)
+static const char *get_imx_type(u32 imxtype)
 {
        switch (imxtype) {
        case 0x63:
@@ -80,7 +80,7 @@ static char *get_imx_type(u32 imxtype)
        case 0x53:
                return "53";
        default:
-               return "unknown";
+               return "??";
        }
 }