CODEOWNERS: add codeowner of spi_pl022

Add myself as codeowner of previously committed driver.

- zephyrproject-rtos#45131

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@fujitsu.com>

CODEOWNERS

@@ -448,6 +448,7 @@
 /drivers/spi/*b91*                        @andy-liu-telink
 /drivers/spi/spi_rv32m1_lpspi*            @karstenkoenig
 /drivers/spi/*esp32*                      @sylvioalves
+/drivers/spi/*pl022*                      @soburi
 /drivers/sdhc/                            @danieldegrasse
 /drivers/timer/*apic*                     @dcpleung @nashif
 /drivers/timer/apic_tsc.c                 @andyross