ARM: imx: Drop bogus newline

This shows up in 'help' output and introduces bogus gap:
"
mfgprot   - Manufacturing Protection

mii       - MII utility commands
"
Drop the newline to fix this.

Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Peng Fan <peng.fan@nxp.com>

arch/arm/mach-imx/cmd_mfgprot.c

@@ -143,6 +143,6 @@ U_BOOT_LONGHELP(mfgprot,
 
 U_BOOT_CMD(
 	mfgprot, 4, 1, do_mfgprot,
-	"Manufacturing Protection\n",
+	"Manufacturing Protection",
 	mfgprot_help_text
 );