axs101: change command prompt marker to match marketing name of the board

Proper spelling of the boad marketing name is with upper case.
So changing it from lower case to upper case here.

Cc: Tom Rini <trini@ti.com>
Signed-off-by: NAlexey Brodkin <abrodkin@synopsys.com>

include/configs/axs101.h

@@ -167,7 +167,7 @@
  * Console configuration
  */
 #define CONFIG_SYS_LONGHELP
-#define CONFIG_SYS_PROMPT		"axs# "
+#define CONFIG_SYS_PROMPT		"AXS# "
 #define CONFIG_SYS_CBSIZE		256
 #define CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE
 #define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE + \