UBUNTU: SAUCE: [FTBS] armel: define KEY_F10 and KEYF11

Fix FTBS on armel.

arch/arm/mach-omap2/board-rx51-peripherals.c:223:
error: 'KEY_10' undeclared here (not in a function)
arch/arm/mach-omap2/board-rx51-peripherals.c:226:
error: 'KEY_11' undeclared here (not in a function)
make[3]: *** [arch/arm/mach-omap2/board-rx51-peripherals.o] Error 1

Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>