lp8727_charger: Clean up lp8727_charger_changed()
lp8727_charger: Clean up lp8727_charger_changed()

Declare a variable at one line. Just return when no charger exists to make
code simpler.

Signed-off-by: Milo(Woogyom) Kim <44ea671b8b7a8196e0a2fe07b01cac0858e18926@ti.com>
Signed-off-by: Anton Vorontsov <1aae5ab9541d66245293c8fc1b9880f5df073631@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs