mb/google/myst: Set system type to laptop

BUG=b:277294070
TEST=None

Change-Id: I0aa4e0bcfb06e5e5cb7e9d52f2d82b5818925267
Signed-off-by: Jon Murphy <jpmurphy@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74284
Reviewed-by: Tim Van Patten <timvp@google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/myst/Kconfig

@@ -26,6 +26,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select MAINBOARD_HAS_TPM2
 	select SOC_AMD_COMMON_BLOCK_USE_ESPI
 	select SOC_AMD_PHOENIX
+	select SYSTEM_TYPE_LAPTOP
 	select TPM_GOOGLE_TI50
 
 config DEVICETREE