ARM: mach-imx: Fix a spelling in the file pm-imx5.c

s/confgiured/configured/

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>