ARM: 6322/1: imx/pca100: Fix name of spi platform data

Commit

	7536cf99 (ARM: imx: dynamically register spi_imx devices (imx27))

introduced a variable named "pca100_spi0_data" but passed
"&pca100_spi_0_data" to imx27_add_spi_imx0.  This wasn't noticed earlier
because both SPI_IMX and MACH_PCA100 are not enabled in mx27_defconfig.

This fixes a build failure:

	arch/arm/mach-imx/mach-pca100.c: In function 'pca100_init':
	arch/arm/mach-imx/mach-pca100.c:411: error: 'pca100_spi_0_data' undeclared (first use in this function)
	arch/arm/mach-imx/mach-pca100.c:411: error: (Each undeclared identifier is reported only once
	arch/arm/mach-imx/mach-pca100.c:411: error: for each function it appears in.)

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>