SPI: OMAP: remove unnecessary includes of plat/clock.h

Remove unnecessary includes of plat/clock.h from the OMAP SPI
controller drivers.  These need to be removed to build multi-subarch
ARM kernels which include these drivers.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Grant Likely <grant.likely@secretlab.ca>

drivers/spi/spi-omap-100k.c

@@ -37,8 +37,6 @@
 
 #include <linux/spi/spi.h>
 
-#include <plat/clock.h>
-
 #define OMAP1_SPI100K_MAX_FREQ          48000000
 
 #define ICR_SPITAS      (OMAP7XX_ICR_BASE + 0x12)

drivers/spi/spi-omap2-mcspi.c

@@ -41,7 +41,6 @@
 
 #include <linux/spi/spi.h>
 
-#include <plat/clock.h>
 #include <plat/mcspi.h>
 
 #define OMAP2_MCSPI_MAX_FREQ		48000000