ar71xx: ar934x_nfc: fix memory initialization bug

sizeof(array_from_function_definition) gives back the size of the pointer.
sizeof(type)  * array_size   should be used in memset.

Signed-off-by: David Völgyes <david.volgyes@gmail.com>
Patchwork: http://patchwork.openwrt.org/patch/4950/
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39890 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: rb95x: use correct SPI flash address

The flash address passed to rb_init_info() is bogus,
use the predefined AR71XX_SPI_BASE macro instead.

Compile tested only.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39891 3c298f89-4303-0410-b956-a3cf2f4a3e73