clocksource: convert ARM 32-bit up counting clocksources

clocksource: convert ARM 32-bit up counting clocksources

Convert ixp4xx, lpc32xx, mxc, netx, pxa, sa1100, tcc8k, tegra and u300
to use the generic mmio clocksource recently introduced.

Cc: Imre Kaloz <[email protected]>
Cc: Krzysztof Halasa <[email protected]>
Acked-by: Eric Miao <[email protected]>
Acked-by: "Hans J. Koch" <[email protected]>
Acked-by: Colin Cross <[email protected]>
Cc: Erik Gilling <[email protected]>
Cc: Olof Johansson <[email protected]>
Acked-by: Linus Walleij <[email protected]>
Acked-by: Sascha Hauer <[email protected]>
Signed-off-by: Russell King <[email protected]>